Malicious PDF — malware analysis report

Static analysis result for SHA-256 a22024d7d31a0585…

MALICIOUS

PDF

38.4 KB Created: 2020-08-07 18:46:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2b1101ccbb0094a336f148bbd39a6bb9 SHA-1: 4ac1d81c4e7eb5261a07e87665373bf5de98d7d9 SHA-256: a22024d7d31a058544ec323ce1c2274e393a4566ecd79e097c7052a80a70bd39
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=jurnal+asma+pada+anak+pdf', suggesting a lure to a malicious site disguised as a relevant PDF. The ML classifier strongly supports the malicious nature of this PDF.

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.ru/pify?keyword=jurnal+asma+pada+anak+pdf In PDF document text
    • http://files.kimtarrestaurant.com/uploads/1/3/0/7/130776592/85648508a87a23.pdfIn PDF document text
    • http://vazelo.paramountbuilders.co.uk/uploads/1/3/1/3/131383483/desaxokotemo-balopojumi-pokipurarokaj.pdfIn PDF document text
    • http://files.pleasantpointcommunitychurch.com/uploads/1/3/2/8/132815063/eed67.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/1/0432/6716/2276/files/sebibesoxezetimeduz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2465/3224/files/tuduvenukusiwifegijazi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0936/7461/files/guxerusobaviwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4992/7327/files/jolenapilaniguras.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2738/1920/files/20749987828.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6284/4837/files/81428945196.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2476/0488/files/r_rajkumar_sogs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4157/0466/files/44447419249.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0265/8979/files/gepukezate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/39563220193.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8572/5857/files/64184494000.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8711/6965/files/10542380718.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5174/5442/files/7027022318.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7723/7913/files/dababegi.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_off000057ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57FF 5240 bytes
SHA-256: f8e0ec3c17a6150d8b4aed0d8f0b3fa39d841ee48cb7336f2b19501eefa1bdcb
font_01_sfnt_off000069bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69BC 10372 bytes
SHA-256: 0f5c7684f54bfd3fa5836ca66735707268709962c2219370ee8204e246a2d501

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