Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1badabd2b10f1fe…

MALICIOUS

PDF

83.7 KB Created: 2021-07-05 22:24:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 768e3b0e379dc5e6a194dac4317b14ca SHA-1: 0525c8496d05addf1d45d297c4a613f31718bdce SHA-256: c1badabd2b10f1fec0cc0f3ee47acaef764b6407222fd1977bf072fa3b1b8860
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Numerous embedded URIs point to compromised WordPress sites and IP addresses, suggesting a link farm designed to redirect users to malicious content. The PDF structure and embedded links are consistent with phishing or malware distribution campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://mognational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609423b566550---78521395019.pdf In PDF document text
    • http://accessiblevehicleservices.com/userfiles/file/nafugazanojowixilitawuda.pdfIn PDF document text
    • https://portsidestrategies.com/wp-content/plugins/super-forms/uploads/php/files/566b7507860b030c59df24a4ca01d6d2/17562242552.pdfIn PDF document text
    • https://www.espymetcalf.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cb4c1d1321d---44313909493.pdfIn PDF document text
    • https://tkpmission.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b66126248c1---kolonematitog.pdfIn PDF document text
    • http://ghhs1968.com/clients/5/57/5762190d0a265df614d1f295a7060a42/File/63240440049.pdfIn PDF document text
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b861849ef9a---16413292725.pdfPDF link annotation
    • https://www.hed-endo.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160a3fa4d4bc76---ravexuwege.pdfIn PDF document text
    • http://beloezoloto.ru/userfiles/file/farazefezetukoru.pdfIn PDF document text
    • https://maxflowfans.com/userfiles/file/dorunotekafifoputexel.pdfIn PDF document text
    • http://www.fotografoeventimilano.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096d9b0c0244---91044325901.pdfIn PDF document text
    • https://dynasty888.com/image/files/20210609_070400.pdfIn PDF document text
    • http://onishi-kyosendo.jp/archive/xomaku.pdfIn PDF document text
    • http://enotecagaribaldi.it/userfiles/files/89480999527.pdfIn PDF document text
    • https://dreamscapes.ca/dream_scapes/userfiles/files/kafewovesokux.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607c21227cb26---94141912597.pdfIn PDF document text
    • https://noticky.net/akce/fotky/file/28507028878.pdfIn PDF document text
    • http://panhongbo.com/ckfinder/userfiles/site_eachfun_com/files/samanodex.pdfIn PDF document text
    • http://www.almansori-ye.com/almansorifiles/files/vuvotip.pdfIn PDF document text
    • http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609473fba8987---vimewabitadajira.pdfIn PDF document text
    • https://aftaplan.com/works/peepsparty/html/upload_files/file/42747816877.pdfIn PDF document text
    • https://immo-cjeanpaul.lu/userfiles/files/kugisepidobotigekozaz.pdfIn PDF document text
    • http://kme-kme.cz/files/file/55488918434.pdfIn PDF document text
    • https://studiogreenwich.ru/wp-content/plugins/super-forms/uploads/php/files/6b80e04987c672d95592a6a424ab1d4c/25562419257.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=figurative+meaning+and+literal+meaningPDF 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_off0000e7cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7CC 10444 bytes
SHA-256: 29bddea333c5af27e6c9efc75ae32dbbd733cb1ddd610dcf5a8159da57384728
font_01_sfnt_off0000ff38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF38 16476 bytes
SHA-256: b76caa0b2da2154f5e0b1da0676833cb23b3ad61d053d7698f79f2cc1df6bb60
font_02_sfnt_off0001298a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1298A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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