Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cfe6ca487505300…

MALICIOUS

PDF

59.6 KB Created: 2020-11-03 08:11:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 17cf81f3c3754b280c045207f7e15acb SHA-1: d294c7439d8e7865adc216a2480af0ac27205b38 SHA-256: 6cfe6ca487505300b59905a20a9ae6796542cbae52debbf1eef0d85e936317d2
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a malicious redirector link to 'https://gettraff.ru/aws?keyword=integrated+chinese+level+2+pdf'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of a malicious URL within the document body suggests an attempt to lure the user to a compromised site, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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://gettraff.ru/aws?keyword=integrated+chinese+level+2+pdf In PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/duwivif.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/11c482d1-edf4-42de-a998-54513ec724b1/gobemigogivulinubap.pdfIn PDF document text
    • https://s3.amazonaws.com/vibove/change_my_sign_in_password_for_windows_7.pdfIn PDF document text
    • https://s3.amazonaws.com/wekibik/valetokigodofebifanajufaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97f316b7-2ad9-4a65-8ccd-4622972de824/94092562272.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8c8026e-f2cf-4901-9036-813e26bd9f71/93939493278.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88af130f-53d0-4db3-b5e3-6d233d5cad51/79333367175.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7464beb5-25b2-4281-aad2-d8b5a4b618e2/parallel_structure_worksheet_rewriting_the_sentences_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/sinamozagemoger/721095686.pdfIn PDF document text
    • https://s3.amazonaws.com/lupebesu/22595572228.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/14458766653.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52fcaaa8-ee45-45bf-9e3c-a73a7eb866a8/csec_physics_past_papers_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9bed9bcc-b418-43f0-85c5-554b6be831af/zemagebigalef.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/1768528357.pdfIn PDF document text
    • https://s3.amazonaws.com/wizedumi/58662611264.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006884.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6884 20756 bytes
SHA-256: e4f7ec88021b4a8b6d0a3ec8b8d2bb7c03a516deef6441def9bfae5c83faac9d
font_01_sfnt_off0000a98f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA98F 5548 bytes
SHA-256: c93ff3ed13dc3710065fd70f3b4e7ddb2fcc584208da6b7004be2476feab5fec
font_02_sfnt_off0000bc74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC74 10968 bytes
SHA-256: 28c20816aef7cf594ad66f64dedbabe2fbfc5f38991c5c5a9b3f48af7f2767a2

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