Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab09721bd70044fb…

MALICIOUS

PDF

84.4 KB Created: 2020-08-10 17:32:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c9193dd26a1165025baf9e008ce3b698 SHA-1: 15561cde5a8a2e9f183fdb94c41d6fa23547a226 SHA-256: ab09721bd70044fb4c56bb6a7d2f33b37ce31e229bd3f458ed2b73e36cdaf190
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious domain, disguised as a book title. This suggests a phishing or social engineering attack aimed at redirecting users to malicious content. The ML classifier also strongly indicated maliciousness. No scripts were extracted, limiting the analysis of the exact payload.

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=business+communication+process+and+product+5th+brief+canadian+edition+pdf In PDF document text
    • http://files.cameronkristen.com/uploads/1/3/1/1/131164488/4660657.pdfIn PDF document text
    • http://files.jagartsupply.com/uploads/1/3/1/4/131453577/wuxepo-sodog-jolefafoduz.pdfIn PDF document text
    • http://files.asensioresearch.com/uploads/1/3/2/7/132741211/6573953.pdfIn PDF document text
    • http://vudiros.knightsrunning.com/uploads/1/3/0/7/130776791/5505595.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/1/0437/5809/2439/files/vofejar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7055/3238/files/97555054731.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9054/2753/files/fapobivuluzobigazavifujem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2271/0941/files/83160768575.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7173/3917/files/16102438492.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5588/3175/files/76709260252.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tokon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8904/3358/files/77195502925.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0913/9111/files/18657840161.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4017/7314/files/2612139556.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/27984898694.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2236/0469/files/52536590877.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: asensioresearch.com 3 samples

Related samples 6

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_off00010bce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BCE 5676 bytes
SHA-256: 1483734af739faa04866da59ed74bb899c5afac6b67538044677da4b4357162c
font_01_sfnt_off00011ee3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EE3 10680 bytes
SHA-256: e6452844a643c470b551bce64936410021ed5bf6f08d63a8595cd1bcac2e33ae

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