Malicious PDF — malware analysis report

Static analysis result for SHA-256 01cc79bc58ddffdf…

MALICIOUS

PDF

33.5 KB Created: 2020-08-11 21:00:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b3ac3f1752c361913884e62c8e518a76 SHA-1: 98f254a79ffce3fb9c35638c88045649a898a1f5 SHA-256: 01cc79bc58ddffdfb20d2b5e7c68788c84e2ad5a9cfc5ff708312f158d3d027e
194 Risk Score

Malware Insights

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

The PDF contains a link farm and redirects to known malicious infrastructure, indicating a phishing or scam attempt. The ML classifier strongly flagged this PDF as malicious. The embedded URLs, particularly the one pointing to 'ttraff.ru', are indicative of a redirection chain designed to lead users to malicious content, likely for credential harvesting or malware distribution.

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=comparative+and+superlative+adjectives+worksheet+pdf+with+answers In PDF document text
    • http://files.cldrecords.com/uploads/1/3/1/6/131636841/bukojawite.pdfIn PDF document text
    • http://ligiw.nakedvanity.co/uploads/1/3/1/8/131871864/5174916.pdfIn PDF document text
    • http://files.asrar103.com/uploads/1/3/0/7/130739126/gesixi-pupakikafutax-nufenagunudux-sokod.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/1/0431/4500/3169/files/21189861653.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9875/1641/files/xudujudafazowokusapulop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0265/7957/files/words_their_way_elementary_spelling_inventory.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1143/2857/files/nec_2008_handbook_download_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8026/9477/files/xegolivapokos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/29246645352.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0874/3834/files/minecraft_cops_and_robbers_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4953/4111/files/index_of_prison_break_season_5.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7871/2472/files/15013828469.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1888/7068/files/99336185021.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/nikitixaw.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 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004452.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4452 5592 bytes
SHA-256: b37500ff38620b5fa15fdccca8bb0099a8a11e3c0b668069c091c75d4ae8c223
font_01_sfnt_off0000573f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x573F 9824 bytes
SHA-256: 089b2161124745fc9edc495022b4798ff93bb18c47a274b5604fc962790e4969

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