Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcf1573038449dad…

MALICIOUS

PDF

74.7 KB Created: 2020-08-02 22:57:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 65e0554564726db9305da159ecd75758 SHA-1: 4657db2d59459a9b9aa39bd935edc895af730e4c SHA-256: fcf1573038449dad240278cdc0364da7600867a90e1488b2dd5869be5489d126
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, with one identified as a known malicious redirector. The document body, though heavily obfuscated, also contains the malicious redirector URL. This suggests the primary purpose is to lure users to malicious sites. No scripts were extracted, and the family is unknown due to the lack of specific indicators.

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=error%253A+assignment+to+expression+with+array+type In PDF document text
    • http://files.jcfarming.co.uk/uploads/1/3/1/4/131453132/bivorakoropelag_vilivibuwe_sedobu_bewel.pdfIn PDF document text
    • http://files.denovolifetherapy.com/uploads/1/3/1/6/131636866/4191590.pdfIn PDF document text
    • http://files.dayangseafoods.com/uploads/1/3/0/7/130739037/68bad7eab476f1e.pdfIn PDF document text
    • http://files.sjncomics.com/uploads/1/3/2/6/132682167/91f0a9.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/1/0431/6495/8879/files/lupudifogovugudigejaper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/1743/3251/files/the_cure_1995.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0650/8701/files/1v1_commands_csgo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65788935473.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5225/3863/files/vatatewonat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0252/7895/files/21635047109.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9569/5266/files/jufodasabovapegupopu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4434/7799/files/duxarer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2476/7400/files/sawonavibisi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8200/6174/files/doruxefig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7329/7822/files/kopesalopaxisob.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 4

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_off0000c69e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC69E 5256 bytes
SHA-256: dfe0d51245bdf31d85665773d1d7bab5cf8d2a2945945739feb07f0dca217127
font_01_sfnt_off0000d865.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD865 17580 bytes
SHA-256: 8b797923f9cbf6262ffcd4465cf4c1927d66f85c06b7a690cb3d15be201714c1
font_02_sfnt_off00010f2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F2A 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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