Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ec3e9cd24220b74…

MALICIOUS

PDF

42.3 KB Created: 2020-08-23 21:16:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d64ae89570adb1d9bdc08a4cd26cd3a4 SHA-1: 998dfd69a77ce6483286eb67a894bf226b6dbc06 SHA-256: 6ec3e9cd24220b7417c04fa669ca89ac99e8eed6d84aac1a7b074c74c30fc278
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.cc) that is flagged as malicious. The document body, though heavily obfuscated, contains a reference to 'Ardisia plant information' and a URL that likely serves as a lure. The presence of multiple SEO-optimized PDF links suggests an attempt to distribute malicious content broadly.

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.cc/pify?keyword=ardisia+plant+information In PDF document text
    • http://files.osspto.org/uploads/1/3/2/8/132815748/migujinegu.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/1/0433/4492/0734/files/administrao_estratgica_hitt.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2955/2552/files/6th_grade_vocabulary_words_and_definitions_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0457/8652/9948/files/baua_comedy_latest.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4791/9522/files/juxuxenenopevamiji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8466/0380/files/greenhouse_effect_information_wikipedia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0708/1622/files/zujesasexoborotoxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/7071/8887/files/movie_admission_ticket_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7863/2095/files/behind_blue_eyes_song.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006867.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6867 5176 bytes
SHA-256: 42fbcbb52fd948edc7753b8b82473765929e0be301dff77385e4f3cc0330c15f
font_01_sfnt_off000079e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79E6 10360 bytes
SHA-256: f5e2420e4ee24e5b41c356ce87deb443f3eb1278201b30f58711a6c45427c26a