Malicious PDF — malware analysis report

Static analysis result for SHA-256 02e6dae8016e894d…

MALICIOUS

PDF

89.6 KB Created: 2021-07-12 17:32:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: bd2e8fd46aa3ce3f6cfb8d7b76d4e14a SHA-1: 259571f91cfb42a850ecd86f2a1738e7804cfe4a SHA-256: 02e6dae8016e894d618ed13c075e5c5c154ee3cabfc1636ebb6a0b284a06f518
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links pointing to compromised WordPress installations and disposable domains, indicating a phishing or malware distribution attempt. The ClamAV detection and ML classifier strongly suggest malicious intent. The presence of multiple PDF_URI and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics confirms the nature of the attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://parvazyab.net/basefile/api203/files/26249034165.pdf In PDF document text
    • http://selfmadefilms.nl/userfiles/files/22862364245.pdfIn PDF document text
    • http://geometrarontani.it/userfiles/files/tokebipuw.pdfIn PDF document text
    • http://iamsoldierfit.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b6cb604345---fafipoziwejo.pdfIn PDF document text
    • http://ruilong-ironwork.com/CKEdit/upload/files/7481877620.pdfIn PDF document text
    • https://trichynext.com/wp-content/plugins/super-forms/uploads/php/files/a3ada28783ffd2505c927324c4a7dad2/sisikaposaketixaga.pdfIn PDF document text
    • https://www.sadcmedia.com/wp-content/plugins/super-forms/uploads/php/files/f6tu3546q6ehg6rib5u34g478m/31241592739.pdfIn PDF document text
    • https://agrilaui.com/userfiles/file/nezefudonimidumaxojetek.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/ba691e68cc3e77a2c4ef8d7efdf07544/67270568109.pdfIn PDF document text
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093a77b694ec---66946894120.pdfPDF link annotation
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160865e7f758ed---dipasigigekusovivomukik.pdfIn PDF document text
    • http://royalwedding.jp/images/blog//file/89817161206.pdfIn PDF document text
    • https://tkpmission.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608db0e63b9cb---90299233423.pdfIn PDF document text
    • https://rjiminfra.com/wp-content/plugins/super-forms/uploads/php/files/5edbdbd33d6ce7e50c5c5c0e759521e8/61762558596.pdfIn PDF document text
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/e4mfsgmo78ht0s4liim97f66l4/99181719726.pdfIn PDF document text
    • https://wlao.on.ca/wp-content/plugins/super-forms/uploads/php/files/d26cdd070068ee5d8b4716a2d84f5734/49608823338.pdfIn PDF document text
    • http://www.kindytennis.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ddff70bc5d6---lapufaxagozujojusuramej.pdfIn PDF document text
    • https://cullinanconstruction.com/wp-content/plugins/super-forms/uploads/php/files/bi34iockovinu1i8t42f416ps2/xogatewirafufunikalefepob.pdfIn PDF document text
    • http://www.sandzthabapanel.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160c6ea2c001b8---rodizomadodap.pdfIn PDF document text
    • http://razaviota.ir/basefile/razaviotair/files/82435312877.pdfIn PDF document text
    • https://classconnbio.com/img-jacson/files/72429739363.pdfIn PDF document text
    • https://www.varishastalari.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb2c4a2b3e---kikebuj.pdfIn PDF document text
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/nfpp4cejl92f04mtv4jqjint86/berakerolexivitozopuvutul.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=signs+of+a+narcissistic+motherPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fae1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAE1 17276 bytes
SHA-256: b0809f3c8321b81648d8338dfd2b75b3f5b12a6d52df5e935ee4c6328830b185
font_01_sfnt_off0001284e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1284E 10812 bytes
SHA-256: adb8d734e650b7e4243ab734361d5091f98068c12e9d3d3b0a844ad88122d818
font_02_sfnt_off00014113.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14113 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1