Malicious PDF — malware analysis report

Static analysis result for SHA-256 842ef8beae061250…

MALICIOUS

PDF

38.6 KB Created: 2020-08-07 06:10:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a4c807597e9e8a9aba0d594e42d2c709 SHA-1: d4d3a8200bdbf9fafb9605a466b950e202de2ae2 SHA-256: 842ef8beae0612501692c65896f961d11ad92b4335980488d69c57cff8007715
194 Risk Score

Malware Insights

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

This PDF file contains numerous links to an SEO redirector, specifically `https://ttraff.com/pify?keyword=computer+vision+in+matlab+pdf`, which is flagged as malicious. The document body, though heavily obfuscated, also contains this URL, suggesting the primary purpose is to redirect users to malicious infrastructure. The presence of many links to benign Shopify PDFs indicates a link farm tactic to improve SEO for the malicious redirector.

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.com/pify?keyword=computer+vision+in+matlab+pdf In PDF document text
    • http://files.hawknews.org/uploads/1/3/1/1/131164488/9474988.pdfIn PDF document text
    • http://webibife.iranianmusings.com/uploads/1/3/1/4/131437462/5d4e21e6.pdfIn PDF document text
    • http://files.saint-johns.org/uploads/1/3/0/9/130969580/17b4b5db4.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/1/0438/1881/1552/files/ssc_chsl_result_2020_tier_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1850/0765/files/siveronoputeregikov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9236/1887/files/vajebusa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9226/2560/files/91441909210.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1927/0306/files/54786589250.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3128/8215/files/database_management_system_for_bsc_computer_science.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5035/2296/files/1923169529.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3161/7945/files/49059122994.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7094/6456/files/85156813294.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3886/6593/files/22806290457.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6427/9718/files/leaked_snapchat_by_location.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: hawknews.org 5 samples

Related samples 2

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_off000059b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59B9 5292 bytes
SHA-256: aa783056c87a8b0526a2171ff4f2e2af22fce0a098e8cafa3b0216f543f8b892
font_01_sfnt_off00006b99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B99 10036 bytes
SHA-256: 1a4327ce035e7fd40675a441db928b21c6e5b2399f23fb87f75f0773183ec68c

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