Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7464470b2513168…

MALICIOUS

PDF

44.9 KB Created: 2020-10-06 18:50:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 70bdf6fac56980d71588d5714ba16be0 SHA-1: e1e5bf68bc59a24d1941d00822f6e5b95910a09b SHA-256: e7464470b2513168ccf57a31d27d86fcf51cc8cb88d84d4c8ca8f28a2d30ffe6
174 Risk Score

Malware Insights

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

The PDF contains a large number of links to external PDF files, many of which point to redirector infrastructure. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags a link to cctraff.ru, indicating malicious intent. The document body, though heavily obfuscated, contains a URL that aligns with the observed malicious link patterns, suggesting a lure for phishing or malware delivery.

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://cctraff.ru/strik?keyword=neverwinter+healing+paladin+guide In PDF document text
    • http://files.benjamintheodore.com/uploads/1/3/2/6/132680853/07290.pdfIn PDF document text
    • http://bodedud.cphslab.com/uploads/1/3/0/8/130814011/20db9.pdfIn PDF document text
    • http://femur.alisonhughesweddings.com/uploads/1/3/2/6/132681443/de8a133.pdfIn PDF document text
    • http://files.glowbirthsandbabies.co.uk/uploads/1/3/1/8/131871643/demukasomij_tokejavux_basupefe_sujifij.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/1/0481/8622/8903/files/mostellers_50_challenging_problems_in_probability.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/3136/6298/files/free_spy_app_no_credit_card.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/2923/2278/files/carter_g_woodson_the_miseducation_of_the_negro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1f9414c-c266-4423-a81a-124769b8df62/givuzebarerezab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e52228c5-db02-4ef7-b371-2ad29b5a7906/puzixizugilajefiteba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4881877c-8090-4a53-ba59-af4664459cba/43162613173.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03608306-9dc2-41b5-aba5-b05082faeb37/70350640563.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8cdab4f8-e370-4da7-8e6c-d8fdc4b2f24d/70934000477.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6324/4960/files/76622970939.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7122/5502/files/13407547038.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6369/6799/files/dudasitofim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/6127/5541/files/klein_nut_driver_set_7-in-1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9488/4000/files/zubin_irani_businessperson_religion.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_off00007289.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7289 5164 bytes
SHA-256: 9f451769beb319b038811f653daff7590fdf4b1c3f39f6d108d97e4efef578dc
font_01_sfnt_off0000842e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x842E 10132 bytes
SHA-256: bddb2b49ac2db27acda464b2ba0992b48b4c76d11a292c1d98c31381afd1eb46

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