Malicious PDF — malware analysis report

Static analysis result for SHA-256 5670b746b6f3ced0…

MALICIOUS

PDF

56.7 KB Created: 2020-08-09 09:36:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9706dd9b093f9b32a0d8d94eee6b3d22 SHA-1: df7df1a7c1bd9d634a1e8598dda0dfa3b1ec0c7d SHA-256: 5670b746b6f3ced079f16c69915d2e647760f6349e0cd3e7fda27538ee2c3cee
202 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=download+dictionary+english+to+farsi+pdf'. Additionally, it exhibits a PDF link farm behavior, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily corrupted, contains fragments of the malicious URL and a call-to-action phrase, suggesting a social engineering lure to download a file.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=download+dictionary+english+to+farsi+pdf In PDF document text
    • http://files.ssc-life.com/uploads/1/3/1/8/131856170/7b78a.pdfIn PDF document text
    • http://riwikuxe.allanmcintyrefineart.com/uploads/1/3/1/8/131871390/2795153.pdfIn PDF document text
    • http://files.stpaulwp.org/uploads/1/3/1/1/131164176/wedunokafuveki.pdfIn PDF document text
    • http://files.christianfellowshipind.org/uploads/1/3/1/4/131438604/sowerubatanatoti.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/1/0438/4089/7184/files/nonorurituv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2093/5590/files/55935119662.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6639/9647/files/resif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2795/4853/files/98987935474.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6693/2902/files/62187070135.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1690/4104/files/wipagigavaxise.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2191/0687/files/64202766815.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5479/1846/files/fabujuzijavubuxarirojol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6726/0576/files/oral_candidiasis_case_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1339/7913/files/28410762353.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2253/3276/files/velasuxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2977/3982/files/gutopenoxisominutajogal.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off0000a7f7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xA7F7 25264 bytes
SHA-256: 933670f76d9202ddcaf84da8d2cc42a2b21cc352ef7368eac3d3bc51d2091e83
font_00_sfnt_off000071d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71D0 5612 bytes
SHA-256: 9bc69de65e4c2fc2f1f8e2d95f80f5e3acb769baa2fee77f3ee54116dfeeeb7f
font_01_sfnt_off00008507.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8507 10128 bytes
SHA-256: 8f68ca111efe72091399cf4a4bb9e73e2915fb305b80bd0c166d77bfacdcee5e