Malicious PDF — malware analysis report

Static analysis result for SHA-256 538f580f9ee35f28…

MALICIOUS

PDF

54.0 KB Created: 2020-07-30 06:53:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7ed03c14041ccc0d24977a911b69445d SHA-1: dc959a747c6e47ba455b134671d7b162f2880749 SHA-256: 538f580f9ee35f2822024c84c206065b567e9717e19069364f195d800b4963d2
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a redirector to a malicious domain (ttraff.cc). The document body, though heavily obfuscated, suggests a lure related to file conversion. The presence of numerous external links, including to Shopify domains, indicates a link farm strategy to potentially improve search engine ranking for malicious content or to distribute further payloads.

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.cc/wb?keyword=pdf%20to%20epub%20indesign In PDF document text
    • http://files.talesbyataillesscat.com/uploads/1/3/0/7/130775503/sezupasobogofixeruv.pdfIn PDF document text
    • http://files.sacredtreasury.net/uploads/1/3/1/3/131379343/1ed9b.pdfIn PDF document text
    • http://files.ventnorhappyhourscottage.com/uploads/1/3/1/3/131380627/317df.pdfIn PDF document text
    • http://files.allmongoliantours.com/uploads/1/3/0/7/130739699/pumol.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/1/0434/7750/0057/files/zapelareselilogi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/42262915950.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7510/9013/files/wejuzefojajamekivifap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8621/7365/files/jepujitebagegaxotokizizi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/7074967355.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3818/7413/files/19043180485.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5761/7823/files/piberetimupidemevemekira.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2841/3607/files/64687309638.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6775/3116/files/zazuxifu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4921/2311/files/zurefafen.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 3

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_off00009434.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9434 4892 bytes
SHA-256: 01c531f24149a0be613995626bfe7aa7436f8f253868669d475ba731a142a1ad
font_01_sfnt_off0000a4e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4E7 11772 bytes
SHA-256: ea7f72c8db8ee50ef90fdf4044066162718d9f8ce3bd667ce8cdcb355ebf80b2

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