Malicious PDF — malware analysis report

Static analysis result for SHA-256 35b6a757441d17ef…

MALICIOUS

PDF

34.8 KB Created: 2020-08-12 20:00:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8f0b2aeb84d3c48d4f9010f5d0fb8679 SHA-1: 87c4480860e0e2589ea6167b7ae7be3171edc2a8 SHA-256: 35b6a757441d17efdd77cc2e2dfe617676b14253c25e4b552ad53b92c0eac7be
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one identified as a redirector to a known malicious infrastructure. The document body is heavily obfuscated but contains references to URLs, including the malicious redirector. The presence of a large number of external links suggests a link farm or SEO manipulation tactic, potentially to obscure malicious activity or drive traffic to malicious sites.

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=bansuri+vadan+course+pdf In PDF document text
    • http://bajowofe.hairbyannettesisson.com/uploads/1/3/2/8/132814930/33480f.pdfIn PDF document text
    • http://difaxi.fenceposttrading.com/uploads/1/3/1/4/131437657/mebisopajek_segiredotov.pdfIn PDF document text
    • http://files.savorlifenutrition.com/uploads/1/3/0/7/130775402/muruzavekelewe.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/1/0435/8891/1267/files/77624976776.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2521/1296/files/52251408743.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zurutadodusabexefiba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6905/4886/files/9665761676.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3953/8851/files/nogodumojomus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/16216600544.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9290/8963/files/zokumew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5912/5160/files/82089008338.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9437/5576/files/44787440670.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7108/6492/files/labavexulapubulojilezeze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2117/2897/files/yamaha_raptor_660_parts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7013/6218/files/sugumiwab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0439/4646/files/mcmurry_8th_edition_solutions_manual.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 3

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_off00004938.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4938 5228 bytes
SHA-256: d9b948fd6177ba48e928220f2f9217a3cd38cfc894a0e6d236b08b35c0ad7afe
font_01_sfnt_off00005b0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B0D 10404 bytes
SHA-256: cdaf2dbf9a5c453d12e97aac68c2bb0eea74f7ea38e435d5ab2ad750953cf8a5

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