Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0dd32f511c49af9…

MALICIOUS

PDF

49.3 KB Created: 2020-08-12 03:15:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e68bddd4d4a511b0ce81578bc169748b SHA-1: 66c75a133e5ce1e7077e837688f881b92c2ea227 SHA-256: f0dd32f511c49af90b0af59946f25e91a3080f7b91ba7c7b4fb841d0560e5487
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a redirector to a malicious URL, disguised as a textbook. The ML classifier strongly indicated maliciousness. The primary attack vector appears to be a link farm designed to redirect users to malicious content, likely for phishing or malware distribution.

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=brief+calculus+an+applied+approach+10th+edition+pdf In PDF document text
    • http://files.gracehouseministry.com/uploads/1/3/0/7/130739664/rubulagobik.pdfIn PDF document text
    • http://files.donnaliberalistore.com/uploads/1/3/2/6/132681826/9086646.pdfIn PDF document text
    • http://files.gooddayhandmade.com/uploads/1/3/1/6/131636725/bozaxed.pdfIn PDF document text
    • http://kupape.toodarnhaute.com/uploads/1/3/1/3/131380600/705228.pdfIn PDF document text
    • http://files.jemdesignz.com/uploads/1/3/1/4/131438583/d0ad087.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/1/0440/6562/0118/files/32635830517.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1588/9305/files/tojaxojivo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5085/2762/files/24282689979.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6241/1935/files/76425866019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6192/6293/files/buxasupojusimurufo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7265/1413/files/babunalo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6552/3862/files/jiliwolew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6304/9376/files/12521499870.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5727/4261/files/speak_english_with_vanessa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4185/7448/files/wixilutekedovibukimujudij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6844/8152/files/44632968918.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2210/6271/files/mizumipadutebunufo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6869/4432/files/22361802661.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_off00007a1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A1B 5484 bytes
SHA-256: 7333ca22df0487428c8a032251ea3b1f71b601e34c32b3fbcc87f017c902f6a7
font_01_sfnt_off00008cb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CB5 13752 bytes
SHA-256: 47f2438cd2d631c2fe5a5054400fadcc5a83b3b86f27a08ccbb49fb7b62919b8

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