Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b487a9bd1f89335…

MALICIOUS

PDF

39.8 KB Created: 2020-08-20 01:24:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 597652e6bfb2a2f04bd6270bae4178af SHA-1: 689a5d604ff2295c2b48fc4bb78dd7b490ce124b SHA-256: 3b487a9bd1f893352c0ae33d1f1c0493cdac5f01b4382928bcfa9e46d39d6939
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.ru, which is disguised as a search result for "Fema ics 100 c answers quizlet". This suggests a phishing or social engineering attack aiming to redirect the user to malicious content. The PDF also hosts a large number of external links, many pointing to shopify.com, which is characteristic of SEO link farm abuse. No scripts were extracted from this sample.

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=fema+ics+100+c+answers+quizlet In PDF document text
    • http://files.artscapewynyard.com/uploads/1/3/1/3/131380687/telifigop.pdfIn PDF document text
    • http://files.browsmith.com/uploads/1/3/1/4/131455398/bivalewuzajubiwe.pdfIn PDF document text
    • http://fuwowuxok.elatell.com/uploads/1/3/1/4/131437044/9585177.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/1/0431/8714/2819/files/romaperakon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/6975/5812/files/carcassonne_strategy_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8476/6620/files/mejewerulikobonowiwan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3724/6118/files/lasepulagisep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5072/9634/files/35007676225.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/0960/5541/files/christmas_gift_card_template_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0106/9220/files/63639373108.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8049/6792/files/5163680675.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8398/7096/files/cellular_respiration_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6032/9637/files/odisha_reporter_jilla.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9703/0817/files/72305250122.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9986/4734/files/24766488256.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 1

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_off00005e4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E4D 5360 bytes
SHA-256: 83db06da42f71b10d00f7026e46f86649e51d74a7025966092bef16fd5ee1299
font_01_sfnt_off0000708a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x708A 9984 bytes
SHA-256: dfc5f6eecf313204e5dcd9ca75661a27e73dcb85c678c789504440a15400f79f

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