Malicious PDF — malware analysis report

Static analysis result for SHA-256 32a5c2320420f51d…

MALICIOUS

PDF

44.9 KB Created: 2020-10-27 14:47:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 29178b0555cc42ad41acdba06146938c SHA-1: 7ff120cc8f7af508aaa18aa810039e6c379fbb3a SHA-256: 32a5c2320420f51d5ab67d632d1e1de6d7e0153c6b571755113fe1fcd065f072
174 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to cctraff.ru, which is associated with the search term 'platinum fit keto'. The document body also contains this URL and other Shopify links, suggesting a link farm or SEO manipulation tactic. The presence of numerous PDF links and the ML classifier's high confidence indicate a malicious intent, likely to lead the user to a phishing or malware site.

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=platinum+fit+keto+contact+number
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/0700/7127/files/picsart_animator_mod_apk.pdf
    • https://cdn.shopify.com/s/files/1/0433/7808/1959/files/21219828713.pdf
    • https://cdn.shopify.com/s/files/1/0503/7244/4328/files/early_childhood_education_handbook.pdf
    • https://cdn.shopify.com/s/files/1/0479/3722/4860/files/murder_in_the_cathedral_text_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0497/8494/6850/files/57402863365.pdf
    • https://uploads.strikinglycdn.com/files/afab30a8-a38a-4952-9a64-9293eb1c90ad/kekelipabuv.pdf
    • https://uploads.strikinglycdn.com/files/1c36c6c6-94ca-4c97-9b22-8ce1438f1d17/gemanozesokawamaxenukaj.pdf
    • https://uploads.strikinglycdn.com/files/1273d82c-2f12-43bd-8495-0d8aa1dee79d/mikexutir.pdf
    • https://uploads.strikinglycdn.com/files/f754a6a4-2360-40de-9072-ea1772cc06eb/952433765.pdf
    • https://uploads.strikinglycdn.com/files/eb71dcbb-027f-459f-a436-0bf89c5c49a7/98671186124.pdf
    • https://uploads.strikinglycdn.com/files/3c2dbe49-f35a-47ed-8fc8-3469d106716f/83872069659.pdf
    • https://s3.amazonaws.com/lomogas/nupabu.pdf
    • https://s3.amazonaws.com/henghuili-files2/17385525469.pdf
    • https://cdn.shopify.com/s/files/1/0268/8113/0680/files/isuzu_4jj1_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/9816/8743/files/root_chakra_sleep_guided_meditation.pdf
    • https://cdn.shopify.com/s/files/1/0437/5845/2897/files/ie_tab_per_android.pdf
    • https://cdn.shopify.com/s/files/1/0440/7777/7061/files/7701226491.pdf
    • https://cdn.shopify.com/s/files/1/0434/1130/8702/files/10197134242.pdf
    • https://s3.amazonaws.com/penale/lidediveban.pdf
    • https://s3.amazonaws.com/gurowozenupifi/coarctation_of_aorta.pdf
    • https://s3.amazonaws.com/henghuili-files/93071167754.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_off00006f51.bin
aee2ba27ad446527e87d7ac63fd3c2196041f5204d5a1b600693d455c0a5aee9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F51 5056 bytes
font_01_sfnt_off0000806c.bin
c59d0414aba00bbab729974b8179f6f96145fbd06161005418082b04e8e43a46		 pdf-font-stream PDF embedded font (sfnt) at offset 0x806C 11004 bytes

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