Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2badb762b946028…

MALICIOUS

PDF

39.2 KB Created: 2020-08-06 19:51:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7d798e0c41b412338a099761cabce1e4 SHA-1: fb6e916cc036312202dc30cc32cf6053077ecca6 SHA-256: a2badb762b946028c09b014f3af9789d0120b6ee11f2d23877d43adb40d9868e
194 Risk Score

Malware Insights

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

The PDF contains a link farm, with the primary link redirecting to malicious infrastructure. The document body text, while partially corrupted, contains the same book title and URL as the malicious redirector, suggesting a lure to download content. The embedded URLs are used to host what appears to be a collection of PDF files, likely to improve search engine ranking and attract victims.

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=eva+luna+isabel+allende+pdf+descargar In PDF document text
    • http://files.melissamccartney.co/uploads/1/3/2/6/132681153/7575564.pdfIn PDF document text
    • http://files.newbeginningswalworth.com/uploads/1/3/0/7/130776841/tunanazopab.pdfIn PDF document text
    • http://files.riverpoethansen.com/uploads/1/3/0/7/130739856/fowewu.pdfIn PDF document text
    • http://files.grovecityfoodpantry.net/uploads/1/3/1/4/131483147/2e1d32.pdfIn PDF document text
    • http://files.stressfreesettlements.com/uploads/1/3/1/8/131858044/ponuwuraz.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/1/0431/9281/1669/files/zilegiguzimiguleleriguzik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4460/0999/files/98902267266.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5425/9606/files/69023363468.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8787/1646/files/85901798148.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4721/3464/files/novuvaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3484/4059/files/bukhari_hadith_in_urdu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3980/7893/files/44578702231.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0361/7173/files/vafig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5372/5334/files/hewlett_packard_cm2320nf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4752/6293/files/fozum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3177/2835/files/dagesobonepogizumevi.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_off0000584e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x584E 5480 bytes
SHA-256: 9fbeb3b4181da909b5d254eecdca5406b0a101159fff6abff00b37e091316039
font_01_sfnt_off00006b04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B04 11208 bytes
SHA-256: 52e0d816d52a3083a4f0ec45291c530fb331d0561192e6fff86e9effae26ebdc

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