Malicious PDF — malware analysis report

Static analysis result for SHA-256 13259aa47d2a036c…

MALICIOUS

PDF

41.5 KB Created: 2020-08-02 17:31:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 45695ad3440ba6c1058ef74fa88fc0e0 SHA-1: 17f4a4d152cbb68227ad71d8057864451db2f03b SHA-256: 13259aa47d2a036cd1c8323ae70448593702eab922d47475b90c287b4eaee0e9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm and a redirector URL, indicating an attempt to drive traffic to malicious infrastructure. The document body, though obfuscated, contains text related to a 'craftsman chainsaw manual' and the malicious redirector URL, suggesting a phishing or scam lure. The ML classifier also strongly indicated maliciousness.

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/wb?keyword=20%20craftsman%20chainsaw%20manual In PDF document text
    • http://files.kellyharkinsdesigns.com/uploads/1/3/1/8/131856039/tanifatexoziwo_kowaxososenezi_napelibapuda.pdfIn PDF document text
    • http://files.rocksfestivals.com/uploads/1/3/1/4/131406149/rodaweripogatipiteb.pdfIn PDF document text
    • http://files.alisapoplavskaya.com/uploads/1/3/0/8/130874338/jureginelebubi.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/1/0431/6148/5471/files/54484109827.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8658/5749/files/zefibuxevaworakugo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2585/8714/files/fuwubufufirarisad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2468/7014/files/nabanonejuvan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9619/5737/files/dosesoxute.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3511/5176/files/tetovuxufupifogeja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3862/9270/files/8764702695.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5317/0339/files/rujadudumevipu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/69143450337.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4632/9750/files/21910438118.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0281/4876/files/rorawilabofotefitab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3900/6632/files/880896852.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8783/8886/files/45680855278.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7973/7237/files/93748884162.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_off00006479.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6479 5392 bytes
SHA-256: 334be5520c9b722d786cbf73375af24bd5fedfef1cb5eb6290c6670afe57b7e4
font_01_sfnt_off000076b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76B4 10168 bytes
SHA-256: cf5c21190dc68cbbf4e486e8f44c81d86a6cc022c8eec82c05e203dc3697309b

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