Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d897063c4a3531f…

MALICIOUS

PDF

34.8 KB Created: 2020-10-28 10:26:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: cb842572e9d49f44611c48ff39c87c39 SHA-1: c3a9cce4f6c448b0f154300d6fc3052aac19efb5 SHA-256: 2d897063c4a3531f9bca119ff6d03ab9e6a3393ada99fa05843cbf09d5185b27
154 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, likely as part of a phishing or scam campaign. The document body text and embedded links suggest an attempt to trick users into visiting the malicious site under the guise of a software download. The presence of numerous links, many pointing to benign files, indicates a link farm strategy to obscure the malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://ttraff.me/123?keyword=weed+firm+2+apkpure+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4377120/normal_5f8b1802cb228.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367297/normal_5f9425fb5e4b6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/9937/6802/files/shure_blx288_pg58_user_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0491/6192/8903/files/35834591211.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/9300/6771/files/ap_chemistry_chapter_4_multiple_choice_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39934d59-fec4-49eb-8758-c1608f5d5a49/48279595313.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f85ce5f5-5775-476a-b386-bb0952472493/80651642079.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a611efb9-2e12-4caf-84ca-0cc4f8a87d6b/zobodegosevozisogoneji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ace3cc1-ef8e-4373-8a77-d68bddc07f50/koledekojupej.pdfIn PDF document text
    • https://s3.amazonaws.com/bokofapig/37026113454.pdfIn PDF document text
    • https://s3.amazonaws.com/jukezeluf/rotepividuzigegefumovibab.pdfIn PDF document text
    • https://s3.amazonaws.com/juvuraguvutoxif/veterinary_angiology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/5272/7972/files/androidx_vs_android_jetpack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/7160/5410/files/93666627313.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/6845/9681/files/funlux_dvr_manual.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004a76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A76 5312 bytes
SHA-256: b76e33d232c68c9604ba84c808dc20824211eb563245c2dde42f2b39df511fbf
font_01_sfnt_off00005c89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C89 9940 bytes
SHA-256: 930d2a843d999096722d1b301f71d8bbad9b76f9383029e1c783bf8d4a0a59c1

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