Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef215b20fe999774…

MALICIOUS

PDF

37.6 KB Created: 2020-08-01 14:50:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f6092499a2d9de7390f90b031ce6f236 SHA-1: a054b2ca5da1513b26e781da018446201270739d SHA-256: ef215b20fe999774c0c115d1fd4c964168d8cec2cfec04f4827349682ec15f78
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though corrupted, appears to be a lure related to 'fundamentals of power electronics'. The presence of a link farm and a redirector suggests a phishing or scam campaign aimed at driving traffic to malicious sites.

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.com/pify?keyword=fundamentals+of+power+electronics In PDF document text
    • http://files.mainstreetoptometric.com/uploads/1/3/0/8/130873943/zireta.pdfIn PDF document text
    • http://files.pineforestanimalclinic.com/uploads/1/3/0/7/130776645/taperewexera.pdfIn PDF document text
    • http://files.stcolmans.com/uploads/1/3/1/3/131380995/3848605.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/1/0431/9540/0356/files/mefunazogobagareki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5651/2676/files/bokolo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9762/9596/files/9671518489.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3292/8671/files/gamul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2522/6152/files/kofiridevaxomezumewopez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0841/6168/files/770_415_1773.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dobemajafapurotexujebo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3006/0955/files/puxiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9819/3566/files/datazusuvepijuxad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2051/5488/files/nitilejeluwarorunew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3124/8539/files/25690710808.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8785/4749/files/61763309055.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7278/1477/files/50675084414.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005676.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5676 5348 bytes
SHA-256: be62a3542ce53b824c8bd21c5ffa8be2d75ea281cb438df0b385e20a059b7838
font_01_sfnt_off000068a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68A8 9612 bytes
SHA-256: f69a3c7c35cd185fd3c95722b0a11ac53a83c483eeaac8dee19afedcd7759d39

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