Malicious PDF — malware analysis report

Static analysis result for SHA-256 0da250f1793ef53f…

MALICIOUS

PDF

41.9 KB Created: 2020-07-31 21:39:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fd386c716a1efde59f5ef40cd3805a4e SHA-1: 89965c522ca29f6c21052167a2539abbd08eee48 SHA-256: 0da250f1793ef53f8f607af851b46495d703bbbda636f81bb31fb6afd7162f89
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many of which point to a redirector service identified as malicious. The document body text and heuristic firings indicate a lure for free downloads, likely leading to a phishing or malware distribution site. The ML classifier strongly supports the malicious nature of this PDF.

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=create+gh-+pages+branch In PDF document text
    • http://files.lukalahfarm.com/uploads/1/3/1/3/131379894/bimozovi_tipoxikadali.pdfIn PDF document text
    • http://files.ohmylashuk.co.uk/uploads/1/3/1/3/131398268/zigolawamu-lupaxa.pdfIn PDF document text
    • http://files.tukteacompany.com/uploads/1/3/1/6/131606819/ribedafegu.pdfIn PDF document text
    • http://files.tequilatoo.com/uploads/1/3/1/8/131871704/2073151.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/1/0434/4040/6684/files/18838657784.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2210/6271/files/faxofux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mabiwabupo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6895/6573/files/8843191629.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1637/9816/files/jokerevek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7541/2902/files/96688264419.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6204/2532/files/4840950318.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8482/3205/files/fuzikonezubimasujabo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4489/6925/files/48105527354.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8438/1337/files/niriluxuniwozipun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4302/8120/files/refizuxobusitozajafavas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8365/9419/files/puwekazavofufawupawobogud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3772/0733/files/90528588216.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2729/9478/files/tomawosokubonojotepifulu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6604/7129/files/sisaxiwij.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_off000061b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61B4 5240 bytes
SHA-256: 4b30869090c60d2b69e1f82f95201442aee510e3694d1186f80ae2034cfc3277
font_01_sfnt_off0000737f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x737F 12052 bytes
SHA-256: 0e883b3e2d45825ed7e6d9995c9d8064af21c212a9b8e4daf0a4352ab46112cb

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