Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d673aa74a2f3e6d…

MALICIOUS

PDF

43.5 KB Created: 2020-08-03 16:49:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7cc71310d844c61de9d0946ee85ec01f SHA-1: 32fd96a4abdcadd830f127910ccd76d650725098 SHA-256: 5d673aa74a2f3e6d81c2840cf41cda2e6c0105bca9086b8aba840b1b672c4a91
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains numerous embedded links, many of which point to a redirector service (ttraff.ru) that is known to host malicious content. The document body itself is heavily obfuscated but contains URLs that appear to be part of a link farm designed to attract users with search engine optimization tactics. The primary malicious URL identified is https://ttraff.ru/pify?keyword=change+adjectives+into+adverbs+exercises+pdf, which likely serves as a lure for further malicious activity.

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=change+adjectives+into+adverbs+exercises+pdf In PDF document text
    • http://files.packerpottery.com/uploads/1/3/1/4/131437418/pukewazagizidik-magavasisora-zumitofasa-pural.pdfIn PDF document text
    • http://files.summerraechase.com/uploads/1/3/0/8/130813855/af63dc7714aa.pdfIn PDF document text
    • http://files.houndshangout.ca/uploads/1/3/1/4/131407761/2803822.pdfIn PDF document text
    • http://files.dannythecoach.com/uploads/1/3/2/3/132303264/jabimorif_mowotaful_pasamalipavizux.pdfIn PDF document text
    • http://files.fotofringelondon.com/uploads/1/3/1/4/131438509/5e3153f0.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/1/0433/0687/7080/files/33435760041.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6237/8152/files/40688422101.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bokowolexom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1122/7300/files/69494549568.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4492/0734/files/34083858744.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1335/5166/files/84155853803.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dofupuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2337/6277/files/juratopasafokefifujogenat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9484/3298/files/kivewubimaxuzibisaluxopu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7106/9594/files/47354527307.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6897/1415/files/ovpn_configuration_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0043/0746/files/58136123949.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9177/2063/files/rujiw.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_off0000547c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x547C 5636 bytes
SHA-256: e750b401b00f5e32b26fc3d47c22ad9f41a44eed697ceef5f88c26dd44435f17
font_01_sfnt_off000067a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67A8 10004 bytes
SHA-256: 70487d0c42c7d62dc73c3f98b489e24a6993100d3b8784fc545cd7f1aedbce81
font_02_sfnt_off00008a0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A0E 16060 bytes
SHA-256: df1d2c903cabdf2976887e260da0b25217edeb5ce2b71f315001024534e8e210