Malicious PDF — malware analysis report

Static analysis result for SHA-256 0064a57a6a89cab2…

MALICIOUS

PDF

42.1 KB Created: 2020-10-04 06:06:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: d27d9a48d2cb5a3768ef3b6e195d5dd0 SHA-1: 64572d32fb5f8b5356b2d3faebff1d2039bd4791 SHA-256: 0064a57a6a89cab263389196dad68a2dbbe99ac92048fcab482fa0f908a1083d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector. The document body text, though partially garbled, includes a URL that matches the malicious redirector, suggesting an attempt to trick users into visiting harmful sites. The presence of a large number of external PDF links further indicates a link farm or SEO manipulation tactic to distribute malicious content.

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://cctraff.ru/strik?keyword=cenarion+circle+rep+guide+vanilla In PDF document text
    • http://rupedoj.alyssavegerphotography.com/uploads/1/3/0/9/130969858/rotorosuvus.pdfIn PDF document text
    • http://files.premieractprep.com/uploads/1/3/2/7/132710569/9217704.pdfIn PDF document text
    • http://files.metrotreeandcrane.com/uploads/1/3/0/9/130969079/xulebogutasu-raweset-felip.pdfIn PDF document text
    • http://zezudife.ukprestigeproducts.com/uploads/1/3/1/0/131070382/gezubuk-tavodagojaze-rofositakuri-powinawurotu.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/1/0431/6761/3090/files/alice_in_wonderland_monologues_queen_of_hearts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5661/0969/files/wild_arms_3_trophy_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/6040/7705/files/set_phasers_on_stun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/0321/5778/files/famagunivu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/8300/1756/files/felix_fernandez_shaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9492/8296/files/longwood_lake_nj_cabin_for_sale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/9118/3766/files/dimaxowomuweromozixuwimib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/0191/3759/files/12153477687.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3028b8b-a37c-4b25-8dc9-d7a6352c7375/50683345524.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81fccefe-5970-43d6-bed5-9a96a2d7514d/24071419763.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/017ed6dd-e812-4fbe-9ee5-940e969706fa/35534528885.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_off000068b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68B9 5028 bytes
SHA-256: 9d4a7fba0a0e1910964c27d5e50337ac05525546463d317cc8437c047b7b28d4
font_01_sfnt_off000079e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79E2 9832 bytes
SHA-256: 83259176e441c5567ec4cf808235ed879126ed0055bc54cafe3252e3704a3446

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