Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ba9658e17291cad…

MALICIOUS

PDF

43.2 KB Created: 2020-09-02 14:51:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 62fe353fa3ce92554704f809297448ae SHA-1: 4beeba31acbb79bd99d3b2259e4c89b9702fe17b SHA-256: 5ba9658e17291cad8a1c36e6411da3588aa08875c0f352170ec671c3ee3f1ad8
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with one critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text suggesting it is a market report, which is likely a lure. The presence of a link farm and a malicious redirector indicates an attempt to drive traffic to malicious sites, potentially for phishing or malware delivery.

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.ru/wix?keyword=colliers+retail+market+report+vancouver
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0430/2559/6573/files/zemupulobiporepisuvuwixun.pdf
    • https://cdn.shopify.com/s/files/1/0430/6026/5117/files/10782593169.pdf
    • https://cdn.shopify.com/s/files/1/0432/2403/9592/files/curriculum_guide_in_health_6_2016.pdf
    • https://static.usrfiles.com/ugd/b8c837_127b7f64e5fe454c97d8858f93b75350.pdf
    • https://static.usrfiles.com/ugd/5cf23b_fe8522b2ce7641daaa81a43eee9cb4b6.pdf
    • https://static.usrfiles.com/ugd/de3d83_d02cf056b31e4c84b97ab2d985ff181a.pdf
    • https://static.usrfiles.com/ugd/de65f7_b585da166b004b5a966613b03079f450.pdf
    • https://static.usrfiles.com/ugd/f967ac_5fb93c5991bc4a8aae314797c93c2184.pdf
    • https://static.usrfiles.com/ugd/7041e4_ed355b9c7fe445d281eb4b8ae0a9d799.pdf
    • https://static.usrfiles.com/ugd/89c6ad_6d2b90a2c70e4e7f9550b8f2b0d4b64c.pdf
    • https://static.usrfiles.com/ugd/19ce5d_24f1bee9e5d5434b8618d5b54ddb5ea3.pdf
    • https://static.usrfiles.com/ugd/b8c837_f387e4aade1d4fa9b16ff9bab8f379b8.pdf
    • https://cdn.shopify.com/s/files/1/0441/3823/4008/files/12379664864.pdf
    • https://cdn.shopify.com/s/files/1/0429/7005/4805/files/18785295086.pdf
    • https://cdn.shopify.com/s/files/1/0436/0755/6258/files/40624197289.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e2a.bin
6764f2a074e6b2e2244076341aa0122f0bb04ae114c226dff280e73535b4d619		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E2A 5108 bytes
font_01_sfnt_off00006f77.bin
d20a443607f1d6677ac8dd464fd8048f72e1dd86266be2848b95800c9acc03c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F77 9948 bytes
font_02_sfnt_off0000919a.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x919A 4324 bytes

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