Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec055992df75bbca…

MALICIOUS

PDF

40.8 KB Created: 2020-08-08 06:47:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 838ce5c8d3446b9172c0e9427b89a09e SHA-1: 7813bb3ee7b7a4af3645d3a60cb256cbc2ce4839 SHA-256: ec055992df75bbcaf689bc95f3da93b412381b1404b162c9c781929fb77ce9df
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at https://ttraff.ru/pify?keyword=blood+and+guts+book+dorian+yates+pdf. This suggests the document is designed to redirect users to malicious infrastructure, likely for further exploitation or phishing. The document body, though partially corrupted, contains keywords related to the linked URL, reinforcing the lure. No scripts were extracted, but the PDF structure and embedded links are sufficient to infer a malicious redirection attack pattern.

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=blood+and+guts+book+dorian+yates+pdf In PDF document text
    • http://files.lorraineeljuga.com/uploads/1/3/2/7/132710679/bipim-zevosutuzobav.pdfIn PDF document text
    • http://nosagid.skywaterlabradors.com/uploads/1/3/2/7/132740214/6176785.pdfIn PDF document text
    • http://files.emexon-international.com/uploads/1/3/1/6/131606502/f054d996c5a8.pdfIn PDF document text
    • http://files.northsoundassociation.com/uploads/1/3/1/0/131070792/gudepumajova-rafoxoz-fopotawum.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/1/0431/7193/8453/files/navifote.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8126/0438/files/71089488153.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0193/0143/files/firosirepanukevixobebepik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5071/9642/files/oxford_discover_4_workbook_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3463/0554/files/61830696317.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3929/2577/files/xamakimepulovenaxujedi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5960/9753/files/php_array_filter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7001/9994/files/cricket_rules_in_tamil_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0582/1599/files/751596699.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8079/4780/files/zudasepidedix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/35022180152.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3393/6547/files/81099152305.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000054f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54F1 5564 bytes
SHA-256: 69dac646a431c8fd327f6b62a99dc63711325138591e82f945bc858c4fced9b3
font_01_sfnt_off000067f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67F5 2628 bytes
SHA-256: 947a22d5170e0a33e875ff6c998fd0763a2eef6813cdc228cce7f17964e1b256
font_02_sfnt_off0000731c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x731C 10180 bytes
SHA-256: db461ed8dd569f51e9ebe5171cf8747153da0fa1891645773c67bbd73c9581a4