Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f2fc4f71bc3b86e…

MALICIOUS

PDF

54.1 KB Created: 2020-08-10 06:59:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 893143eda32f256beb4bf58b523fc707 SHA-1: 4a652181acd9ce85e89a75f8cf2703c21211c6fa SHA-256: 5f2fc4f71bc3b86e54404a67176cc5f46ddadfe693dd24d05b8f0ec7723155cf
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many of which point to a redirector service known for malicious activity. The document body, though heavily obfuscated, contains a URL that appears to be part of a link farm designed to attract users searching for specific document types. This suggests a phishing or scam attempt where users are tricked into downloading potentially malicious files or visiting compromised websites.

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=general+knowledge+questions+and+answers+about+pakistan+in+english+pdf In PDF document text
    • http://files.aldenstidom.info/uploads/1/3/0/7/130776334/8162819.pdfIn PDF document text
    • http://files.barrycolonfitnessrus.org/uploads/1/3/0/7/130740069/de936683814.pdfIn PDF document text
    • http://pidunovi.poeticartspace.com/uploads/1/3/2/7/132712207/4789711.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5664/4774/files/70950317703.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3669/6995/files/recurring_credit_card_authorization_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8852/7013/files/merasulalulizibekon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8252/2528/files/timijesesafapojopixamapo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3767/1080/files/gadudepazamenuwabixavunop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5479/1832/files/wutusoxuvigog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9812/0094/files/32137219237.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/59022585862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2732/5343/files/bekibidibonire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/60233972239.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 5

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008447.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8447 5640 bytes
SHA-256: 66105001f77fd29d35ba1e149cd3dba39779881381e305501a48fe1336c6e8c3
font_01_sfnt_off00009777.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9777 11360 bytes
SHA-256: 3f97b4a74d1b67ca7aa772c169e41d93d235fc46ded6d88f13447fed0ffd4e04
font_02_sfnt_off0000bcdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCDB 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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