Malicious PDF — malware analysis report

Static analysis result for SHA-256 7409a9b4a7220bc4…

MALICIOUS

PDF

41.3 KB Created: 2020-08-11 22:43:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a4aeb197e44673d6134d898acab159d7 SHA-1: d8d28b31b690d30bf2d9ce7e490b96473a289e7d SHA-256: 7409a9b4a7220bc4fa23a176dec04a8dae6a78fe94d675123cf0a8c92643e50a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a redirector service, which is a common tactic for phishing and malware distribution. The document body, though heavily obfuscated, contains text related to a work attestation request, suggesting a social engineering lure. The presence of numerous external PDF links, many pointing to Shopify, indicates a link farm designed to obscure the ultimate malicious destination.

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=demande+d+attestation+de+travail+pdf In PDF document text
    • http://files.michaelstiertherapy.com/uploads/1/3/2/7/132740533/xuxopazorakik.pdfIn PDF document text
    • http://tudif.monitheseries.com/uploads/1/3/0/8/130814328/tikuzoriwafigom-sedefo-viletifo.pdfIn PDF document text
    • http://files.daneyates.com/uploads/1/3/0/7/130739971/bilusesuberi.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/1/0434/1684/6488/files/fesem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2955/2552/files/15090440085.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/4155504299.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4101/3412/files/72406616725.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5042/5750/files/casio_hr-_100tm.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2643/9582/files/306295476.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/15750122344.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3019/8937/files/repokuwol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6727/7469/files/10586707210.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5167/7856/files/85327618555.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6987/5111/files/36989160505.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4649/3605/files/botonetexikube.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/54613417108.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 8

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_off0000607e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x607E 5244 bytes
SHA-256: 81469d3e9c3205f430ef2b5455145ee14d111bbb45db5b701bdd861f6ee65784
font_01_sfnt_off00007241.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7241 11572 bytes
SHA-256: 05d7eb986f639457789a21bb203f2d2e59837e385a22ea2c0313078eafe6e5f1

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