Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e497b77c92748de…

MALICIOUS

PDF

103.2 KB Created: 2020-08-08 14:47:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 54319ad58cb59bb4e81a301c83b8749a SHA-1: e249e0dc47b36e857c47ab569c16cc2978e2c76d SHA-256: 7e497b77c92748de04b425b69655256aaebe8d568fd14fd378c90c36bb78ec0e
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, many of which point to a redirector service (ttraff.com) that is flagged as malicious. The document body, though heavily obfuscated, contains the URL that is also present in the heuristic firings, suggesting a phishing or SEO spam campaign. The presence of embedded URLs and the ML classifier's high confidence score further support the malicious classification.

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=buddhism+a+short+history+pdf In PDF document text
    • http://files.namiramseycounty.org/uploads/1/3/0/8/130813100/borukotamudibof_zepemenupe_sigugotawaj_disidezizemupo.pdfIn PDF document text
    • http://files.evge.us/uploads/1/3/0/8/130813616/zalumi.pdfIn PDF document text
    • http://files.knzafm.com/uploads/1/3/0/9/130969922/binojemukegelure.pdfIn PDF document text
    • http://files.ewengur.com/uploads/1/3/2/6/132681969/kiwojo.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/1/0427/4126/8647/files/sakusokezaxarusas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4210/3719/files/maria_west_side_story_partitura_piano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/faramerujinusopuko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6819/4978/files/43975813332.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2166/3397/files/balance_ton_quoi_partition_piano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6074/7688/files/aarti_sangrah_file_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9183/5545/files/nakeligarenowuvedirawen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4357/0343/files/59092318146.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9229/6359/files/tetevibokelumix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8945/9368/files/likasuxadapew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5122/0134/files/xuseguvuputevakufopowes.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 7

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_off00015848.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15848 5400 bytes
SHA-256: f4947cac7c50f2c64c0df24398bc55e14ba8f282df01e98b43005b40de9e4c14
font_01_sfnt_off00016a82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16A82 11800 bytes
SHA-256: 43bd1c58aeea89c79d7cd3f1d002138e0b26817e48a585f14514493437ae2794

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