Malicious PDF — malware analysis report

Static analysis result for SHA-256 df0ba928e705050c…

MALICIOUS

PDF

44.3 KB Created: 2020-07-30 18:45:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: aeeb0e662b76a95e49fefd1dd7dfa1fc SHA-1: 2636db660e17f7836319c40927a7af42bf1c9255 SHA-256: df0ba928e705050c0c03447ede17da907c7a5811c00247d3df12cb05f912f5ca
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link that leads to a farm of other PDF files, likely for SEO poisoning or to obscure the final malicious destination. The ML classifier strongly indicates maliciousness. The document body, though heavily obfuscated, contains references to 'Oblivion game guide pdf' and the authoring application 'wkhtmltopdf', suggesting a lure to a fake guide.

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=oblivion+game+guide+pdf In PDF document text
    • http://files.spearmintcleaning.com/uploads/1/3/2/6/132681293/manawisereke.pdfIn PDF document text
    • http://files.haematology.com.au/uploads/1/3/1/4/131453241/0e7059.pdfIn PDF document text
    • http://files.eleanorpersonaltraining.com/uploads/1/3/0/7/130776409/1907390.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/1/0431/9707/1524/files/zopadiseratagagenokojixej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3426/2169/files/mokipiponikegovana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4647/8758/files/29906856562.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/wokunuriru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7496/8997/files/panij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1152/9114/files/lewusozijuvilolip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8852/7013/files/ramezoxofex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9777/4497/files/16015280488.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5627/5360/files/jalixodubigarigoroxaramem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8106/2813/files/53773753875.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 2

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_off000070dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70DD 5116 bytes
SHA-256: 2b844a6e106e0fb404f31e769a5056faf3ed8aca73b6a0459b11875865b0709c
font_01_sfnt_off0000822b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x822B 10032 bytes
SHA-256: 00d269d09bbaaf062d7bdb173f0d08f74f28aeff4d119b5ca03cf9af71864447

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