Malicious PDF — malware analysis report

Static analysis result for SHA-256 df67e306ac43e2cb…

MALICIOUS

PDF

91.4 KB Created: 2020-12-23 19:50:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 56d43faf81fef0ed3cc5f50604dcfea3 SHA-1: 296f7ac465f769184a69dbb27e813c2ecb59cd12 SHA-256: df67e306ac43e2cb091b6da518dd679b9f07cc92c35282b14dc9ef327b22644f
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating an attempt to lead the user to a malicious site. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a phishing or malware distribution campaign, likely initiated via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9613

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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 https://ggtraff.ru/strik?utm_term=doot+meaning+in+urdu In PDF document text
    • https://cdn.sqhk.co/zifalulog/gfnhgkG/gapuxumalovegaz.pdfIn PDF document text
    • https://remejatezikame.weebly.com/uploads/1/3/1/0/131070309/8061e3.pdfIn PDF document text
    • https://bipotanerazufis.weebly.com/uploads/1/3/4/5/134597687/234b7ae80b8a270.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478148/normal_5fd7cb6c22e8b.pdfIn PDF document text
    • https://cdn.sqhk.co/netesatova/Pikujhf/takoxolijevizonoxujifabo.pdfIn PDF document text
    • https://gogebuzavoriro.weebly.com/uploads/1/3/2/6/132681212/d502318206f2781.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472488/normal_5faf55f7dac01.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://uploads.strikinglycdn.com/files/123e9b77-94d2-4f42-bd54-635a3ea5fb61/femikinudigu.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/89369074720.pdfIn PDF document text
    • 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://scripts.sil.org/OFLIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 9

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b006.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB006 5524 bytes
SHA-256: dd0539d932249586497369dc867bef2a763962b2dc0b09ef6ef37ea55382e273
font_01_sfnt_off0000c360.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC360 4932 bytes
SHA-256: 804402dde3b7cf700a737b67c48750cd2f30ac368438db2a807c5b159d2ca1e6
font_02_sfnt_off0000d40e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD40E 2656 bytes
SHA-256: dbaab8dcf32bfe64cb008f34eb54f5316f62236e8dffe3de49b44225404383a5
font_03_sfnt_off0000df12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF12 2328 bytes
SHA-256: c42118b51b061dffbc196cd4866a2cf76d9f31ae9d0a8f6c06e6ad224a677b24
font_04_sfnt_off0000e9c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9C7 2108 bytes
SHA-256: 806d12f4c18e044784d20764d58024893796e88f204c306662924b3e907cbcac
font_05_sfnt_off0000f392.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF392 6640 bytes
SHA-256: 2da83060ad210a9a1743b04a22b2cc5ebb14ba7af64fbaa5f25da2d26a1b3d84
font_06_sfnt_off00010530.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10530 15164 bytes
SHA-256: 303615cb4fa427a7f9a0c0c0e468a59ca4d1e161929ef10086ae3b6c600bfe08
font_07_sfnt_off00013336.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13336 17896 bytes
SHA-256: acfdd821df5a16b9a1d35a81eca15b261f4e312a7b3402f638a933adfe0922c8
font_08_sfnt_off00014e39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E39 4356 bytes
SHA-256: ce00649ebaa922638379a8aee0e25524665ef0f502d031e4eaabe3def45ca912

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