Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb2b024f12b8cbc9…

MALICIOUS

PDF

46.5 KB Created: 2020-07-29 03:13:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cf5631d91d5765a7f553f13ef52e11f7 SHA-1: 900c38939952b36f38ae82504c159cd78ad4bb8d SHA-256: eb2b024f12b8cbc9f9bc3f3f70ba6382a4a212de1ff28435f65dc604f60b1ce1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that redirect to a malicious URL, disguised as interview questions. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM indicate a link farm designed to redirect users to malicious sites. The ML classifier also strongly indicates maliciousness. No scripts were extracted, but the primary attack vector is the malicious redirection.

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.cc/pify?keyword=it+support+interview+questions+and+answers In PDF document text
    • http://files.insj.org/uploads/1/3/2/7/132712282/gipax.pdfIn PDF document text
    • http://files.extremeflyerdesigns.com/uploads/1/3/1/3/131382239/364088ecd.pdfIn PDF document text
    • http://files.latavolamarche.com/uploads/1/3/0/7/130738919/pamig_pujisi_mimapivuzuwulu_lotutevok.pdfIn PDF document text
    • http://files.pre-protein.com/uploads/1/3/0/8/130814529/dukovowudawaniluke.pdfIn PDF document text
    • http://files.aromathymebistro.com/uploads/1/3/0/7/130738996/e459e5e4.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/1/0434/1461/8262/files/tomezudulunuwojasapef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9125/5713/files/nitutufoxin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7891/0106/files/norafanewegexerananeza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2032/8853/files/vuxibiguso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7677/2250/files/24202317808.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6377/0274/files/jupapatirufidikasomoko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6470/4662/files/12040339077.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5453/8658/files/setejadafef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8561/8583/files/xirede.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1024/3230/files/belof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9033/7189/files/gitepupesavut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5726/7359/files/fusafokavika.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1760/1181/files/86392449221.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2353/2195/files/79341701132.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_off00007949.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7949 5016 bytes
SHA-256: 5dfb4195215186fa3e836f1b9b539b017d4b4ce9a1ac7219274b07c98fe27f48
font_01_sfnt_off00008a71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A71 10028 bytes
SHA-256: 880e0b29be82f7face20639a071a68200173b169807b362e672755a1e3881630

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