Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b85f6003c62a13c…

MALICIOUS

PDF

41.5 KB Created: 2020-09-23 00:05:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f711fb3f05b6003ace15c0a988315a65 SHA-1: e96ce98dc4bad9ea8de655af694b6942810a7010 SHA-256: 2b85f6003c62a13cf664fdc57bd2aeccb4089a9e71a793f8b7f2c717f11afed8
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, including one identified as a known malicious redirector. The document body, though heavily obfuscated, contains text related to search engine optimization and a specific keyword, suggesting a lure. The presence of a link farm and a malicious redirector indicates a likely attempt to drive traffic to malicious sites or engage in SEO spam.

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.link/wix?keyword=2003+hyundai+elantra+repair+manual In PDF document text
    • http://faxezim.acefortune.com/uploads/1/3/1/4/131438539/jederixefezan_difasiz_limixogazuxi_debanuwubim.pdfIn PDF document text
    • http://files.studio17hairsalon.com/uploads/1/3/0/9/130969525/rotereruf-lokamosa-gezarikelitoto-bakux.pdfIn PDF document text
    • http://lawuxad.liveforliteracy.com/uploads/1/3/1/4/131453459/vojikopimivupo.pdfIn PDF document text
    • http://kelujen.shoktoberfest.com/uploads/1/3/0/7/130739090/5399014.pdfIn PDF document text
    • http://files.itbfm.com/uploads/1/3/1/3/131379590/xadezobe.pdfIn PDF document text
    • http://files.tarkatrailguide.co.uk/uploads/1/3/1/3/131398143/ac848d1efce523.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/1/0435/7016/7966/files/cell_size_and_diffusion_lab_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0636/0730/files/curriculum_vitae_sample_for_fresh_graduate_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3680/3233/files/71387724943.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9093/4949/files/25284561090.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5638/9528/files/backup_whatsapp_messages_to_pc_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2271/0941/files/top_rated_android_phones_2017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6527/8625/files/25423462243.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9757/0980/files/65709264907.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8080/1701/files/79297942327.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_off000063bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63BF 5468 bytes
SHA-256: c2249b90fa60f1bc51862e371dde8fc25bf031610360c471246ae16835c7712c
font_01_sfnt_off00007631.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7631 10284 bytes
SHA-256: 5060fb63a906aee9b7d98b2530bc68ee15c745437f169022c72e9932618fcb10

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