Malicious PDF — malware analysis report

Static analysis result for SHA-256 4983c2d23142b960…

MALICIOUS

PDF

48.9 KB Created: 2020-08-24 13:06:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8e0ced22705cb41f1a8719b077b5b213 SHA-1: b0d633b5a3496754a89eecb112725355d8d73810 SHA-256: 4983c2d23142b960de46130f54fcd6596fc4df4aa1dab86fe05fbe0ad4209487
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'video editing animation software free' and the malicious URL. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many of which point to Shopify domains, likely to obscure the malicious redirector.

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.com/pify?keyword=video+editing+animation+software+free In PDF document text
    • http://files.smallpawsbiglove.com/uploads/1/3/2/3/132303374/bodivudu-nowakoli.pdfIn PDF document text
    • http://files.thetraveleducator.com/uploads/1/3/2/6/132681456/donatilamoxopig_bikawaravi_kapadiwe.pdfIn PDF document text
    • http://files.tmsapvo.com/uploads/1/3/2/6/132696214/1589242.pdfIn PDF document text
    • http://files.latinforstudents.com/uploads/1/3/2/6/132696598/kuxaxad.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4586/1014/files/64628163694.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3192/8730/files/two_basic_classification_of_management_information_system.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2949/5959/files/44972883493.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9269/5456/files/rodufulareruvisiber.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9043/4455/files/real_gangster_game_in_jio_phone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6594/7798/files/storm_in_a_teacup_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4037/2896/files/candide_magyar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9934/8389/files/dilemosopolumakazafiludi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5833/9733/files/the_great_hunt.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7709/7886/files/63874593028.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9444/2137/files/livre_sur_l_apiculture.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5411/2672/files/lubiribokoviwoturebakuli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5327/7589/files/biology_bits_in_telugu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000073f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73F2 5040 bytes
SHA-256: 026eb34e38590ec0d0cb1cd7e8943af6f0df7338ea8863f7a750545cefbac3ca
font_01_sfnt_off0000850c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x850C 10156 bytes
SHA-256: 0f31cffe6e11988939743fd0e0dc598383b24de2a57d7721e58a3350341e011a
font_02_sfnt_off0000a7d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA7D1 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34