Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7aab6f6129167fc…

MALICIOUS

PDF

36.8 KB Created: 2020-08-18 23:02:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 856c05c209570bffbc064e514413143d SHA-1: b02ea7e399d061cfce325c3b035b7fcc4511a4bf SHA-256: e7aab6f6129167fcca1732f7dada5064b7bd2cbd856d1ad25ff1fbb180d11f9e
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded URLs, with a critical heuristic firing for PDF_SEO_LINK_FARM indicating a link farm. One of the embedded URLs, https://ttraff.ru/pify?keyword=happy+anniversary+gif+images+free, is flagged as a malicious redirector. The document body contains garbled text alongside the URLs, suggesting it's not intended for human consumption but rather for search engine indexing or 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=happy+anniversary+gif+images+free In PDF document text
    • http://files.greenleafpsychological.com/uploads/1/3/1/4/131414743/4177014.pdfIn PDF document text
    • http://files.groveparkstudents.com/uploads/1/3/0/9/130969580/5091743.pdfIn PDF document text
    • http://files.dartmouthmountaineering.org/uploads/1/3/1/6/131606144/543486.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1551/9912/files/xarexeputivajuwozagi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8545/4757/files/96845513174.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9986/5756/files/insanity_workout_calendar_printable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5651/3692/files/sunexulupalilunugaxov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5697/1432/files/sutoxala.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5731/4983/files/amlodipino_dosis_maxima.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0349/5071/files/mumulamekikoluroroda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2574/3521/files/alkalize_or_die_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3579/4327/files/97526030799.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0060/1504/files/relexutunikekafa.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 5

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_off000046e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46E4 4908 bytes
SHA-256: 13e047980a3d82faccc28050821d7ec913febf5620cc7bfb3f64b016973c49ee
font_01_sfnt_off00005775.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5775 9696 bytes
SHA-256: 0bcff011e09476fe721cba1451f48bc8c2810d6d8184a50135cff69d0d86b0c6
font_02_sfnt_off0000787f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x787F 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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