Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf7aaf37cc63d335…

MALICIOUS

PDF

49.1 KB Created: 2020-08-22 19:06:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 983013a960157e9265b24564691561ed SHA-1: 0262502176329ac0a0d02dec2834b830d49758f6 SHA-256: bf7aaf37cc63d335cf02762d615bbf96d653d9e17090cf304eae170c63a851c7
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that triggers the malicious redirector. This suggests the PDF is designed to act as a link farm, with the primary malicious intent being to redirect the user to the ttraff.ru domain for further exploitation or phishing.

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=lego+disney+minifigures+series+1+rarity+guide In PDF document text
    • http://files.equipasia.net/uploads/1/3/0/8/130874352/3328991.pdfIn PDF document text
    • http://mekafifal.red-bean-coffee.com/uploads/1/3/0/8/130814526/dotinidavutil_lowigipasozad.pdfIn PDF document text
    • http://files.johnnosscience.com/uploads/1/3/0/7/130739227/mojenapisofez-mefine.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/1/0437/4390/3905/files/42058439108.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7633/8335/files/horde_1-_60_leveling_guide_classic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9312/1442/files/subivex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7188/0870/files/83692979344.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1540/4711/files/techos_verdes_tesis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0457/3347/8566/files/34542343811.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2924/9694/files/business_english_b2_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6992/1690/files/amazing_grace_jazz_piano_sheet_music_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0140/4830/files/37537943917.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1361/1413/files/nuxavozak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9064/8996/files/10359466521.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0455/7469/files/wow_just_a_few_more_things.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006bfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BFC 5288 bytes
SHA-256: 8b8b289eb9dd7e4bf4b6b6837a936904899472f21baf8a34c0bdf7b1c2c6a38b
font_01_sfnt_off00007dfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DFA 10524 bytes
SHA-256: 4d15d9e2cbc2dfc4dec91e5a1050632d66ce40fe757faa2c176e6ea47eb00896
font_02_sfnt_off0000a22f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA22F 16076 bytes
SHA-256: 7348a63ea9206f1dd9d85ac5b8e77a4d6d13d552d707fc8209e912c0db264539