Malicious PDF — malware analysis report

Static analysis result for SHA-256 905eb32306d5674b…

MALICIOUS

PDF

53.2 KB Created: 2020-07-21 22:42:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e106eb2ef20fc64168e1a7c9fe29de92 SHA-1: 2f16e2c249ef570f5033a28ed33ab0aa995ddc4a SHA-256: 905eb32306d5674b1acc5b1803b32b5b41b8cf2384872a82ba0fa40e444bb8da
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a malicious redirector link disguised as a manual, which is a common social engineering tactic to lure users to malicious sites. The PDF also contains a large number of external links, suggesting a link farm for SEO poisoning. The ML classifier strongly indicates 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.cc/wb?keyword=fluke%20376%20fc%20manual%20espa%C3%B1ol In PDF document text
    • http://files.mastergardeners-rc.org/uploads/1/3/0/8/130813650/juwimagipiladi.pdfIn PDF document text
    • http://files.alexandraorme.com/uploads/1/3/0/7/130775554/1598442.pdfIn PDF document text
    • http://files.melissarisbergphotography.com/uploads/1/3/0/8/130874250/d4ddae90a24af4.pdfIn PDF document text
    • http://files.pinkturtledesigns.co.uk/uploads/1/3/1/8/131857758/cf6621.pdfIn PDF document text
    • http://files.wingchess.com/uploads/1/3/1/4/131437701/ce4b99.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/1/0434/8782/1984/files/jotikoze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5689/0013/files/sanisuzovumuwub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5039/2984/files/7106244306.pdfIn PDF document text
    • https://woroxunogu.files.wordpress.com/2020/06/pugimavarifejanevinevepuv.pdfIn PDF document text
    • https://jigemig.files.wordpress.com/2020/07/sumulowikuwukod.pdfIn PDF document text
    • https://xebaburab.files.wordpress.com/2020/07/42020182329.pdfIn PDF document text
    • https://magapabiv.files.wordpress.com/2020/07/kudur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2962/4982/files/javukutikuwuge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3153/5524/files/66507184787.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6101/0842/files/wepobipufaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8358/6974/files/wonapu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5671/7224/files/motutoden.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7280/5277/files/7177251774.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9596/4328/files/maxokubisu.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_off00008448.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8448 5448 bytes
SHA-256: 6ec81d0716525e7595d67d0d018d7de0516b20fab45590e8d017f8525d63ce7f
font_01_sfnt_off0000967f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x967F 15436 bytes
SHA-256: 3b1e2820860f71dbbbd82be2c349b6218e975353ae3f272f72ff650d8d4383e6

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