Malicious PDF — malware analysis report

Static analysis result for SHA-256 943a62f8565f82b7…

MALICIOUS

PDF

86.4 KB Created: 2020-08-23 07:10:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9a5f66c5b181adc85d98b81ee6433943 SHA-1: 29fe083e99c4507276e7984f99a5bca2f819f1de SHA-256: 943a62f8565f82b7a87e3cd923a4ac239986c1efbc01c295a0f1479f57dc808a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.001 Malicious Link

The PDF contains multiple embedded links, with one heuristic specifically identifying a malicious redirector. The document body, though heavily obfuscated, contains a URL that aligns with the malicious redirector finding. Another heuristic indicates a 'link farm' structure, suggesting an attempt to distribute or host numerous malicious documents. The presence of a callback lure heuristic further supports a phishing or scam pretext.

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=oecd+guidelines+transfer+pricing+methods In PDF document text
    • http://files.evanbarbee.com/uploads/1/3/0/8/130874217/f1581e3842.pdfIn PDF document text
    • http://mewiwuwop.chillnbeans.com/uploads/1/3/0/7/130775795/vetixapolivibolov.pdfIn PDF document text
    • http://files.small-product-photography.com/uploads/1/3/1/4/131407511/2558618.pdfIn PDF document text
    • http://files.baileyspetwellbeing.com/uploads/1/3/0/9/130969907/foniwa_vanawum.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/1/0437/2715/9448/files/rassembler_fichier_en_ligne.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1075/2663/files/vba_set_date_time_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4994/3202/files/ts_16949.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9557/9029/files/nhs_self_certification_sickness_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7927/7467/files/sandwich_theorem_calculus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34803766861.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9229/6359/files/janib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4260/9051/files/parametric_versus_nonparametric_tests.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5122/0120/files/68399928665.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wudivilijekeroleve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9917/5579/files/classroom_seating_chart_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81159011373.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 2

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_off00010461.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10461 5596 bytes
SHA-256: 4c3ed7bf614e1c6ef773ce58ee19998e8ad35906649545b579f7c87656146dbb
font_01_sfnt_off0001173a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1173A 16456 bytes
SHA-256: eb95b0c2288e947cd14aeb20e9f3693e3413e1083c19fb80367390a3659d08a7

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