Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bee8e25542c1367…

MALICIOUS

PDF

42.9 KB Created: 2020-08-11 15:39:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 319372f4bedc27c084c9f2894841f3fe SHA-1: 07dc141a7fadd698384cfcfd268b7f73b29a2733 SHA-256: 1bee8e25542c1367dc83d0a960ae2dcfe8b3796b7c7d5a395f53732a7ab85be3
194 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. This suggests the document is part of a link farm or SEO poisoning campaign designed to lure users to malicious sites. The ML classifier also strongly indicated maliciousness.

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/pify?keyword=energias+renovables+en+colombia+2020+pdf In PDF document text
    • http://files.shoppoorgeorge.com/uploads/1/3/1/6/131636916/1f731fba93afa.pdfIn PDF document text
    • http://files.coverstoryband.co.nz/uploads/1/3/0/8/130813317/9043817.pdfIn PDF document text
    • http://files.perdurabo10.net/uploads/1/3/0/7/130776381/loroju_matasuzaf_petugizafifut_neriregutuxopo.pdfIn PDF document text
    • http://files.truceteachers.org/uploads/1/3/2/6/132681863/koperito_dufopetor.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/1/0431/7426/4996/files/wogofuzeralokudixitata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0663/1846/files/donibezelozororaxolezo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5152/2977/files/gofagipanasilapof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0043/0746/files/xapululanejidivibekago.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/18813115042.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53940500656.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0577/9878/files/maxinoku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7245/3797/files/14112697044.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8909/8907/files/12358144473.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1022/0447/files/zomuxuge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4327/4395/files/symbolic_annihilation_theory.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7138/0383/files/lalebamifaziwetow.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_off00006468.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6468 5908 bytes
SHA-256: be8b57b7d34803447be33db6ed087ef665ca2feab93b7ae88c6c5d7e3e024050
font_01_sfnt_off0000786c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x786C 11192 bytes
SHA-256: 695cc68da0b49526953cde58ae663468452ab8ada0bb6fbb0080a0ec930c7d71

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