Malicious PDF — malware analysis report

Static analysis result for SHA-256 adb71a15d21b678a…

MALICIOUS

PDF

38.5 KB Created: 2020-08-12 07:02:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0a7a5da7c70f9e3b6b0f11051b81151d SHA-1: 67eafa601839a03db2f2fbf75e2e885e66ecdd9b SHA-256: adb71a15d21b678a84d6344a02ad13ffad699c86ec320e1d3f545f0e99af76e2
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, identified as a link farm, pointing to various PDF files. One of these links, https://ttraff.ru/pify?keyword=castrol+power+1+racing+4t+10w50+pdf, is flagged as a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body contains text related to 'Castrol power 1 racing 4t 10w50 pdf', suggesting a lure to disguise the malicious intent.

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=castrol+power+1+racing+4t+10w50+pdf In PDF document text
    • http://files.emmanoelleclark.com/uploads/1/3/1/1/131163669/joxewik-dugewesit-lolometow-loxitavamejef.pdfIn PDF document text
    • http://wavarise.knowkevo.com/uploads/1/3/0/7/130739777/pusot_ruputadinukaje_gapukukonufi.pdfIn PDF document text
    • http://files.earthenhairandbody.com.au/uploads/1/3/0/8/130874489/zikat_sodet_donujozitinano.pdfIn PDF document text
    • http://zekufe.2thinkforlife.com/uploads/1/3/2/6/132695832/6325542.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/1/0431/9726/8128/files/forudovumasatalajivixid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4477/2759/files/57246994925.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6381/3020/files/suruxutisipisivod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4527/3251/files/99657301540.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/1091/9321/files/alter_ego_a1_french.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5475/0106/files/download_brunner_and_suddarth_s_textbook_of_medical_surgical.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5464/5916/files/bajuxobebotejoto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1700/2405/files/38462416237.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8189/1989/files/80548465158.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3394/2423/files/91965387152.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7259/3821/files/zakijubozinisodipav.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_off00005631.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5631 5724 bytes
SHA-256: c387274b06ede93808433a7ae12d2d6cc13cdd63414173d08fb62fee60a98f59
font_01_sfnt_off000069e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69E4 10308 bytes
SHA-256: 8f0a284d5548b2fa0e2dd531090492c9593f5682f56ffea100489e1717892b0d

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