Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f72a97460ae490a…

MALICIOUS

PDF

44.0 KB Created: 2020-08-06 02:16:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fcdf02eb239f03e6a122920fca669ff8 SHA-1: c1822e12cc27d9740acf91fbcd293243a2ba6bbc SHA-256: 6f72a97460ae490a81e6e9c8f95af01d08a04865988fda146eba997ba7e027c1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to an SEO redirector, which in turn points to malicious infrastructure. The document body, though malformed, contains the same redirector URL, indicating a clear intent to direct users to a potentially harmful site. The ML classifier strongly supports the malicious verdict.

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=difference+between+collision+domain+and+broadcast+domain+pdf In PDF document text
    • http://files.biohealthworksinstitute.com/uploads/1/3/1/8/131871994/bujirevisunolo_xabaviza_gimov.pdfIn PDF document text
    • http://files.ohsband.org/uploads/1/3/1/4/131411688/gigevaluzesebat-xojenuges-sebajajo-vekejunarunuso.pdfIn PDF document text
    • http://files.nextlevelgymnastics.net/uploads/1/3/1/0/131070689/766860.pdfIn PDF document text
    • http://gajog.limoservicefriscotx.com/uploads/1/3/0/9/130969744/6779451.pdfIn PDF document text
    • http://files.erikharmens.com/uploads/1/3/1/4/131407144/5631300.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/1/0434/1514/2567/files/whirlpool_dryer_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1187/3688/files/definisi_cacar_air.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8199/0295/files/27609483251.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3775/3501/files/zijagapu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9820/0481/files/61159640761.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6741/6488/files/losuguwitafomolujufukebol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3396/0341/files/40383350384.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2193/3466/files/41235224920.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1668/1629/files/playgirl_magazine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7793/5005/files/75060352659.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8808/5145/files/jakukorabav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5211/3820/files/54527959169.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9471/3244/files/rowovotifukaj.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_off00006c5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C5A 5532 bytes
SHA-256: c3c47a6218c0a299bc7a46b2ba57b62691bb08d81ff0e6aefda70c9a250208eb
font_01_sfnt_off00007f22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F22 10316 bytes
SHA-256: 3be94f944699549ee0e47f374790362fcb75c2866bb1c9d2ca279d4669b312a1

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