Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e02afe738d3074d…

MALICIOUS

PDF

43.4 KB Created: 2020-08-08 18:18:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 182ae99a2de5f555ab8c1950c47d4ab5 SHA-1: 8b3361c0bc907f19b42d4ce1c0992867375a8d82 SHA-256: 0e02afe738d3074dce8decbbd655aad962cccb3d202836f4e42c9d97da0ac063
174 Risk Score

Malware Insights

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

The PDF document contains a lure related to an Australian passport application, directing users to a malicious redirector URL. The presence of numerous external links, many pointing to Shopify domains, suggests a link farm or SEO manipulation tactic to obscure the malicious destination. The ML classifier strongly indicated maliciousness, and the callback lure heuristic further supports a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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.com/pify?keyword=application+form+for+australian+passport+pdf
    • http://files.refugehomecare.com/uploads/1/3/1/4/131406843/492c2c86824f.pdf
    • http://files.matthewpeckhamtenor.com/uploads/1/3/1/4/131408581/4497099.pdf
    • http://files.waynecitysaddleclub.com/uploads/1/3/2/6/132683328/tukonoveg.pdf
    • http://files.turtlebeachpc08.com/uploads/1/3/0/8/130813601/xubile.pdf
    • http://files.healthybodyhappyhearts.com/uploads/1/3/1/3/131381658/9398549.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0429/9010/8833/files/ccna_routing_and_switching_complete_syllabus.pdf
    • https://cdn.shopify.com/s/files/1/0438/0141/1744/files/vuxodokudupevuk.pdf
    • https://cdn.shopify.com/s/files/1/0429/9119/0167/files/subject_verb_agreement_multiple_choice_quiz.pdf
    • https://cdn.shopify.com/s/files/1/0432/3885/0719/files/diablo_2_walkthrough.pdf
    • https://cdn.shopify.com/s/files/1/0432/6581/8789/files/lajurosakurisezafiweb.pdf
    • https://cdn.shopify.com/s/files/1/0432/0195/3952/files/81882710030.pdf
    • https://cdn.shopify.com/s/files/1/0434/0776/9750/files/15750627198.pdf
    • https://cdn.shopify.com/s/files/1/0428/0428/1511/files/20597954338.pdf
    • https://cdn.shopify.com/s/files/1/0437/9151/5809/files/29519985136.pdf
    • https://cdn.shopify.com/s/files/1/0437/8463/4530/files/miwel.pdf
    • https://cdn.shopify.com/s/files/1/0436/0850/6531/files/jetepofik.pdf
    • https://cdn.shopify.com/s/files/1/0435/3998/8648/files/bacillus_anthracis_microbiologia.pdf
    • https://cdn.shopify.com/s/files/1/0432/7063/5678/files/zuwedemedugelisitikonoxug.pdf
    • https://cdn.shopify.com/s/files/1/0433/7693/5068/files/writing_algebraic_expressions_worksheets.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_off00005f69.bin
44f8edc0048b710ce77f598e00d22617e9c1c7715067564e9ba552dd0b92da0f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F69 5052 bytes
font_01_sfnt_off00007063.bin
9518d442f5375907799b288f9f0ee39d665f7890cad29e186cab630d4bd249de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7063 9816 bytes
font_02_sfnt_off000091fe.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91FE 4324 bytes

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