Malicious PDF — malware analysis report

Static analysis result for SHA-256 7794b78dfa8a8ec3…

MALICIOUS

PDF

47.8 KB Created: 2020-08-18 15:59:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 30195f33cb328df6613414112730e0b2 SHA-1: 1a50259a855557b3202431801fb9d5174cf25642 SHA-256: 7794b78dfa8a8ec34493809d14862ad2fd3d2a2f576af507890c31fe6baefbae
194 Risk Score

Malware Insights

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

The PDF file contains numerous links, many of which point to a redirector service designed to obscure the final destination. The primary redirector URL is https://ttraff.com/pify?keyword=adding+integers+word+problems+pdf, which is flagged as malicious. The document body, though heavily obfuscated, also contains this URL, suggesting a phishing or scam attempt by luring users to click on links presented as educational material. The ML classifier strongly indicates maliciousness.

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=adding+integers+word+problems+pdf In PDF document text
    • http://files.evelyngamacounseling.com/uploads/1/3/2/7/132712206/junewosijumiv.pdfIn PDF document text
    • http://files.jamztrainings.com/uploads/1/3/2/3/132303351/02c79e.pdfIn PDF document text
    • http://dalux.herefordshirefencingclub.co.uk/uploads/1/3/2/7/132712663/2686175.pdfIn PDF document text
    • http://files.bentcreeklodge.com/uploads/1/3/1/0/131070872/933118.pdfIn PDF document text
    • http://files.thewellonbeacon.com/uploads/1/3/0/8/130873992/9d761bd16.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/1/0433/9204/1118/files/cryptocurrency_trading_platform_comparison.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8790/4411/files/characteristics_of_life_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6924/3549/files/fozofigiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8379/2533/files/nemikibuzub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7103/6823/files/penokudowami.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7300/1889/files/development_economics_masters.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1044/0862/files/anna_karenina_magyarul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7007/6566/files/jenkins_generate_xml_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8706/9335/files/28156694917.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007352.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7352 2828 bytes
SHA-256: 4aba2bb845853324476be69e5ed1bf4ff35002942389efac2b843cac1129f0e9
font_01_sfnt_off00007d4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D4D 5372 bytes
SHA-256: 2508c68599d7bf6471b82b7f5ddcddd20a790b95f625906e115352f53a643e18
font_02_sfnt_off00008f8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F8B 10160 bytes
SHA-256: 1434fd140b9228ce6333b222e4be178c537f5ef1437505c4fdc5742f854c6a51

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