Malicious PDF — malware analysis report

Static analysis result for SHA-256 829fddd98866a80d…

MALICIOUS

PDF

63.7 KB Created: 2020-09-06 00:13:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8d2a3b75a997719b1ebb2fd4472823f0 SHA-1: fe91feb99524fd355f14c86ab85134461f433da3 SHA-256: 829fddd98866a80dd21a75d2f6e6e08037123dd4c7ffa1ea16b79cf89f153c6f
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically `https://ttraff.link/wix?keyword=accounting+attachment+report+pdf+zimbabwe`. This URL is presented within the document body and is also flagged by a high-severity heuristic for SEO link farming, suggesting a phishing or malware distribution attempt. The ML classifier also strongly indicated maliciousness.

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.link/wix?keyword=accounting+attachment+report+pdf+zimbabwe In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.thdl.org/http://www.thdl.org/TibetanIn PDF document text
    • https://cdn.shopify.com/s/files/1/0453/5720/3611/files/vosewadupomuzewepagefuniw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4481/4500/files/countries_and_nationalities_exercises_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/9282/0382/files/elco_thision_s_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8768/1954/files/juvafukifigadepenufene.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/7891/2917/files/experian_free_credit_report_review.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2203/8686/files/supplement_bottle_mockup_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0409/2839/files/aarti_sangrah_lyrics_in_marathi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9056/6556/files/2020_quarterly_calendar_template.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_497dc99242c144dbba8b873bab2c1a97.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/ce0e6d_7769fea8aac746908128c134dd23b1db.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/6908d7_63f4e0ca19d44095a2509fee3facdc75.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/02ccf7_737b3e5f8393486ea324f8b416d899a3.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/03ae60_fe06f76e3f0e4258a0404786a0b4fc29.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://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlTibetanIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000083a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83A5 5632 bytes
SHA-256: 7aafb6c35ac1f4af2085cf8c7c5098cf0b768e8d3615015081338a4bc03fe9ba
font_01_sfnt_off000096c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96C2 8976 bytes
SHA-256: 5f07b96a345167f8d597a4b3e1fe0e52dd7a62508af6f8e7b00de7561a89dfc4
font_02_sfnt_off0000a885.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA885 16448 bytes
SHA-256: 41f35fbffc04dc1c42ac3d3c4f9ad3f6f9e9af153d795fca66011bcd319be4b8
font_03_sfnt_off0000dc47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC47 16064 bytes
SHA-256: 1396562ca3b520584892f4bd50ff39b0722e014cdbc1625119a677b71e1270af