Malicious PDF — malware analysis report

Static analysis result for SHA-256 736657982de2c2f7…

MALICIOUS

PDF

40.7 KB Created: 2020-08-12 04:22:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 265dd204c269a1f6336d5e7840c2e785 SHA-1: 5879cdf7d0fe5b28f2803b0298c16c4f82d1994a SHA-256: 736657982de2c2f70cd0d7a5962d9de0b43ce00982c7e2385aa093744ac4aa12
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.ru) that is flagged as malicious. The document body and heuristics suggest a lure for free downloads, likely a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious intent, potentially leveraging embedded JavaScript for redirection.

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=adam+s+apple+wayne+shorter+pdf In PDF document text
    • http://files.mreshistory.com/uploads/1/3/1/3/131381006/fosotodole-korinotanum-mufup-nowomopudosix.pdfIn PDF document text
    • http://files.amsitraining.com/uploads/1/3/0/7/130739764/xuloruxevudozonogal.pdfIn PDF document text
    • http://nidet.zebasiddiqi.com/uploads/1/3/2/6/132682076/waxujiwa-datosovisodusu.pdfIn PDF document text
    • http://files.blues-city-kids.com/uploads/1/3/1/4/131438161/xekusulumonapifewa.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/1/0441/3063/1832/files/fable_3_torrent.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6844/8152/files/34194653733.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3123/9588/files/domijubekatapazadataluzib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9728/3992/files/jilininavogedo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8770/7804/files/26344541532.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0816/3993/files/52447403045.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8000/0422/files/64858142512.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2160/6820/files/analytical_reasoning_techniques.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7208/6435/files/baghdadi_qaida.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8746/2551/files/7567577461.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1732/9064/files/search_files_on_google.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_off000060e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60E7 5464 bytes
SHA-256: f1efeb24b698197efa8f273eac5bce09d056ce76070a24818d720c501b20c5fe
font_01_sfnt_off00007364.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7364 10240 bytes
SHA-256: 5931a730d1f4923d868756d9678cc0f703817647b6bcb59b719ebd25fc1b8ec0

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