Malicious PDF — malware analysis report

Static analysis result for SHA-256 211ae3ad318928ff…

MALICIOUS

PDF

39.7 KB Created: 2020-08-07 06:25:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a036b1991e0b3ccbf6f3872aea90beaf SHA-1: 3656b984a79e27c878120b1d8f2fe8b429c0233b SHA-256: 211ae3ad318928ff69ab818271f3488b3445cdc3b133354ca72faeb04a7f958f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links designed to appear as a link farm, directing users to a redirector URL. This redirector likely serves to obscure the ultimate malicious destination, which is suspected to be a phishing or malware distribution site. The ML classifier strongly indicated maliciousness, and the presence of embedded URLs and a link farm points to a social engineering attack.

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=biblia+jerozolimska+pdf+chomikuj In PDF document text
    • http://fifagik.hopespringsvillage.org/uploads/1/3/0/7/130775934/zaroke.pdfIn PDF document text
    • http://zopab.tonycliffmusic.com/uploads/1/3/1/4/131483372/zijamogepun-rebetitomu-bexugenorufo-kuxev.pdfIn PDF document text
    • http://files.darleneolivo.org/uploads/1/3/1/4/131407233/suwilo_saren_berupixoj.pdfIn PDF document text
    • http://files.crossingovercdc.org/uploads/1/3/0/8/130813409/womabi_baziles_vejoti_xakukuguvixefe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0047/1456/files/31569052977.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/livoxigugefeguvon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8675/7536/files/44898516145.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0806/3649/files/minoginumemunipogejawi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2139/3320/files/betigatetes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4836/9319/files/41229435520.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7096/3350/files/80307828622.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7240/6179/files/virananukolebawazinidid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4836/8288/files/lexical_semantics_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0892/5600/files/maxofu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8520/9506/files/15454957024.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 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F9E 5468 bytes
SHA-256: 6b5b455c05556e0581d4d57703d9af7c018fa5a0e8596146be1c5f6bf62fc40d
font_01_sfnt_off00006234.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6234 10288 bytes
SHA-256: fcb23b95802f65897dc206321f9b5c79fb3b416965267b6c0c2f15e5143c76c5
font_02_sfnt_off0000823f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x823F 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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