Malicious PDF — malware analysis report

Static analysis result for SHA-256 31ee456329a5ac5b…

MALICIOUS

PDF

52.1 KB Created: 2020-08-08 21:59:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 696463d6bd518749d044f65b2a10fc7e SHA-1: 22705d986c9d6bf1e5422e283d7455f338cc9dba SHA-256: 31ee456329a5ac5bc0e1143979194a8229adc6686b4e707b9acc0ecacd9ecc8f
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=normality+and+abnormality+in+psychology+pdf'. Additionally, another critical heuristic indicates a PDF link farm, suggesting the document is designed to host numerous external links. The low-severity heuristic for urgency lures further supports the phishing pretext. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=normality+and+abnormality+in+psychology+pdf In PDF document text
    • http://zumarabew.gemtaonline.org/uploads/1/3/1/4/131437601/3614660.pdfIn PDF document text
    • http://files.yachtrock.biz/uploads/1/3/2/6/132682022/mibolatigi.pdfIn PDF document text
    • http://famifelus.eastsideyoga.co.uk/uploads/1/3/1/3/131398560/da2b4f719a9.pdfIn PDF document text
    • http://files.solonterrasgolf.com/uploads/1/3/1/4/131453177/polalixufuv.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/1/0431/6197/6994/files/top_5_annotation_apps.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5241/6672/files/85923968614.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7190/4673/files/gujekazirisedus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6966/8517/files/ruzifezelujamedug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0833/3736/files/break_into_wall_street.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7108/6485/files/kogum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8710/9023/files/79961420151.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0944/1953/files/13667739117.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9712/1178/files/minecraft_veinminer_1._12._2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7235/6509/files/45077469825.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/4210/6518/files/adobe_illustrator_2020_tutorial.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 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_off00007ece.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ECE 5780 bytes
SHA-256: 865d84e4ae5c1dd13ff3e16bf8598c60d9eb1e1fa2df973986cf576359bb8067
font_01_sfnt_off0000925a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x925A 15700 bytes
SHA-256: b7808ce383c80c865a64f38f180f2a98f36314c0ec719ed7a178dd5185b7b8cb

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