Malicious PDF — malware analysis report

Static analysis result for SHA-256 49428a1ea0554362…

MALICIOUS

PDF

41.5 KB Created: 2020-08-03 18:28:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 194e316e8cdd195c2a635365fb6a3df2 SHA-1: 84d95264ef33d73354fa20d332b2679c5aab5046 SHA-256: 49428a1ea0554362f676130b4fd57ee54a9fb6b88def01c6cda5ae06e8131c13
194 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and contains a critical heuristic indicating it links to known malicious redirector infrastructure. Additionally, it exhibits characteristics of an SEO link farm, with numerous external PDF links. The primary malicious IOC is the redirector URL, which likely serves as a gateway to further malicious content.

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/wb?keyword=create%20and%20write%20pdf%20file%20in%20java In PDF document text
    • http://files.theroundhousefarm.com/uploads/1/3/2/6/132682039/zalavesotimak.pdfIn PDF document text
    • http://files.olliedudekplaysbass.com/uploads/1/3/1/6/131637546/jaziju-bozoz-zijiwefosaz.pdfIn PDF document text
    • http://files.curvyventures.com/uploads/1/3/1/3/131384070/torawe.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/1/0427/7148/0742/files/60825281319.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6787/3182/files/git_force_pull_from_remote.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8634/6408/files/24263354038.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0974/4789/files/ankle_breaker_badge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5755/2277/files/convert_to_visio_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8695/4139/files/63256016956.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/61403973964.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4506/8699/files/82851437812.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6939/0500/files/58157299337.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7677/2250/files/zitefesalokuvokex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7944/1307/files/zofirazuputid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2603/9463/files/22493248709.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
🗂 Part of campaign: americanlegionpost555.com 5 samples

Related samples 7

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_off00006290.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6290 4992 bytes
SHA-256: dc127c3de7400a471ca25c07b6522d64459fe49177c44c337dc090af9317d1f6
font_01_sfnt_off000073b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73B4 11248 bytes
SHA-256: 98826428891908c993f2690bf8b06b5138ef49e32d8d9f1a2b0afcfc856b8d30

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