Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e64a6950734c928…

MALICIOUS

PDF

48.9 KB Created: 2020-08-29 19:42:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bacfb82b7531f504820b2d30820141ad SHA-1: c41530123792a3e1f18792596d1108844f71bc48 SHA-256: 0e64a6950734c928d0f4176470f2118c3765734cbebf9052b784f60ae46da94b
154 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which points to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'American pie new movie' and the authoring application, suggesting a lure. The presence of numerous links to external PDFs, many hosted on Shopify, indicates a link farm strategy, likely to improve search engine ranking for the lure content and potentially mask malicious activity. No scripts were extracted from this sample.

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=american+pie+new+movie
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/3845/7501/files/4266061336.pdf
    • https://cdn.shopify.com/s/files/1/0455/3523/2165/files/aluminium_profiles_for_windows_and_doors.pdf
    • https://cdn.shopify.com/s/files/1/0432/5851/1510/files/django_auth_user_form.pdf
    • https://cdn.shopify.com/s/files/1/0438/5603/5990/files/dolubidag.pdf
    • https://cdn.shopify.com/s/files/1/0433/9158/2357/files/brahmo_samaj_history.pdf
    • https://cdn.shopify.com/s/files/1/0432/3573/7755/files/dorn_il_khan.pdf
    • https://cdn.shopify.com/s/files/1/0463/6717/8907/files/interview_questions_and_answers_for_salesperson.pdf
    • https://cdn.shopify.com/s/files/1/0429/2955/3575/files/bajiwavekosirakazotekivij.pdf
    • https://cdn.shopify.com/s/files/1/0431/2861/9168/files/72245521491.pdf
    • https://static.usrfiles.com/ugd/ab0441_c2236faecf2a4e698906b0728a6ebe5f.pdf
    • https://static.usrfiles.com/ugd/6df952_3ce9523a6174429a9ff8f2a6fab90d5f.pdf
    • https://cdn.shopify.com/s/files/1/0429/8981/3909/files/pexovofugefibaw.pdf
    • https://cdn.shopify.com/s/files/1/0433/4557/6088/files/3m_coliform_petrifilm.pdf
    • https://cdn.shopify.com/s/files/1/0430/3673/7699/files/cable_selection_calculation.pdf
    • https://cdn.shopify.com/s/files/1/0432/2643/1652/files/lipid_profile_test_report_time.pdf
    • https://cdn.shopify.com/s/files/1/0427/5293/4044/files/botozogivifi.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007747.bin
3d6c390c222bb82d73147a0be9868a92635e3b49ed39466cf77b6a8a1fe71fe9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7747 5008 bytes
font_01_sfnt_off00008844.bin
76d37e34e4030297320b9546b7bedc440fa9cc2e485578483fe9bc4f3b36c3e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8844 14752 bytes

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