Malicious PDF — malware analysis report

Static analysis result for SHA-256 b05265cc3494a58d…

MALICIOUS

PDF

61.3 KB Created: 2020-07-29 13:06:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 413bf6ed94ce043c0e9ec4b5621686ac SHA-1: d0837b1b03def2e239fc6d4724911179f2276235 SHA-256: b05265cc3494a58df786dd13bef0d968b4b43b653412badfb0bf939c7ddeb84b
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, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, appears to reference 'Broaching tool design pdf', suggesting a lure to disguise the malicious intent. The primary malicious IOC is the redirector URL.

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=broaching+tool+design+pdf In PDF document text
    • http://files.jsjrnashville.org/uploads/1/3/0/9/130968962/27420abc445c.pdfIn PDF document text
    • http://files.kcactf5.org/uploads/1/3/1/4/131437941/0c2f89a7b246f.pdfIn PDF document text
    • http://files.seanrashbowling.com/uploads/1/3/0/7/130740589/5f87b35d.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/1/0432/8249/7701/files/navefixunip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3678/7356/files/ruworezizitep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0807/1592/files/ropag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3161/6923/files/79181861586.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30611133668.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8403/6761/files/50121141356.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/fadokojunubixaxegojusopev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2412/9946/files/bukokodatesidofonebelowuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8126/0438/files/jigotawuxikavuta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0310/7752/files/74821790277.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/75815848510.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3049/4878/files/86034724782.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000098d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98D7 5256 bytes
SHA-256: 6e632630efdf5290d88981605eabf7cb85ef0abf09896709e261aae223b517bb
font_01_sfnt_off0000aaa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAAA6 12144 bytes
SHA-256: a5dc19e66e68a1e62470da3ceebbc76da2ba08749e33cdfb0bb931283a78139b
font_02_sfnt_off0000d22d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD22D 16168 bytes
SHA-256: 13596defb2bcc6fc1048af8e1a4b019015f57a35384aba88f9e1637b8f94b635

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