Malicious PDF — malware analysis report

Static analysis result for SHA-256 2deb02625038d2aa…

MALICIOUS

PDF

67.9 KB Created: 2020-12-20 05:58:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: bdb1a94816827de8af10d054c224dd4b SHA-1: e56fde9f8a16eafc032f358faf2f2aa5a2192fb1 SHA-256: 2deb02625038d2aac8cd1067c886a2649422861735f3af13d64430bc144d8806
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, disguised as a tablet manual. This suggests the document is part of a phishing or malware distribution campaign. The presence of numerous other PDF links, many pointing to benign content, indicates a potential link farm used to obscure the malicious destination. No scripts were extracted, and the document body was heavily obfuscated.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://cctraff.ru/strik?utm_term=rca+galileo+pro+11.5+32gb+2-in-1+tablet+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4424007/normal_5fba7d0f36652.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416810/normal_5f9aedce2fe33.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380070/normal_5f8cc8175919e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447662/normal_5fad714f1e931.pdfIn PDF document text
    • https://gezeteweni.weebly.com/uploads/1/3/4/0/134040803/77613538a540d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499300/normal_5fac28e811d82.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369333/normal_5f8b6ab213e23.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc65200ea4a794d566a2ee3/t/5fca057252b5874c85965110/1607075189521/dinosaur_small_world_toys.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27d6b113-0378-4d36-9049-1bb75e96b13b/ikea_malm_bed_frame_full.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76eba02b-0d0c-4dbb-b9e4-ad7492dd17a9/how_to_reset_my_ipod_nano_4th_generation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ce5e1d1-60ec-405a-9385-74e9ca83e488/jixuxadin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f00fac35-4c18-428d-b4b9-5fe7f7e1b96f/90854036846.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5769459b-95cc-4435-9a27-1b9774d5f581/supco_m500_megohmmeter_manual.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_off0000c9ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9AC 5760 bytes
SHA-256: 9eb4a39a66019486f251bc445a46b0cadd9053d14f1855219bc5d1211e5f6e25
font_01_sfnt_off0000dd43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD43 11028 bytes
SHA-256: 0c747477d11f6f6550cdabed1af0d4569f2f54b6abf7c54892fe1fe0c6de433b

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