Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f788ecc60bb01a4…

MALICIOUS

PDF

39.7 KB Created: 2020-08-17 02:44:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7c7787c4af220bb64057ed978915fbd7 SHA-1: 13b5b0c8f7fa17e5a03282581157ef7ff505a7da SHA-256: 2f788ecc60bb01a4655cd3dc7809e53e40b4c176a2934bc0101e360c2088304b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass of external links, with one specifically pointing to a known malicious redirector. The document body, though garbled, contains the same URL, suggesting a lure to a malicious site. The presence of numerous PDF links indicates a link farm SEO tactic, likely to obscure the true malicious destination. No scripts were extracted from this sample.

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.ru/pify?keyword=abcd+movie+songs+free++pagalworld.+com In PDF document text
    • http://files.companionsofchrist.org/uploads/1/3/0/9/130969375/3234800.pdfIn PDF document text
    • http://files.ifluidics.com/uploads/1/3/1/4/131453253/82ff5498.pdfIn PDF document text
    • http://files.np4yaxham.com/uploads/1/3/2/6/132695575/5cdfd9c1c.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/1/0433/3410/7286/files/24506514372.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7767/1843/files/planas_de_vocales_para_imprimir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0655/8359/files/81366622992.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0822/0574/files/83477981782.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2806/9017/files/english_communicative_literature_reader_class_10.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6101/0842/files/33986021850.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4952/5149/files/31840705254.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5893/6473/files/bludgeon_brothers_theme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9320/5916/files/54333944436.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A6D 5788 bytes
SHA-256: 5374c18bd2971de0d28c62b2563968baf84e538a0feba931e67eb51d4064047d
font_01_sfnt_off00006e17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E17 10540 bytes
SHA-256: 6544e7b22ebdd67de2bb8c02d0d533d976b14ef7082286cdce0181d04b089a4a

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