Malicious PDF — malware analysis report

Static analysis result for SHA-256 e39de0d7fc72820e…

MALICIOUS

PDF

122.4 KB Created: 2020-08-21 08:17:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: accb7537941c13af515c965ef671459e SHA-1: 3829aa512436dfbb20b24477618b113a6678eec6 SHA-256: e39de0d7fc72820e262566afa909888580aa7a3e76ab589c5556a64f6c6579d2
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with many pointing to the 'ttraff.cc' redirector service. This suggests a link farm or redirection attack designed to obscure the ultimate malicious destination. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, and the document body was heavily obfuscated, preventing a deeper analysis of the content's intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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=fusarium+incarnatum+first+report In PDF document text
    • http://files.golfclubmd.com/uploads/1/3/0/8/130813887/xobojejuputiru_pajimutiveva_tuzumunuwuwo_nawifef.pdfIn PDF document text
    • http://files.idealcitydesigngroup.com/uploads/1/3/1/8/131871462/8544753.pdfIn PDF document text
    • http://soguzenob.dkuntz.com/uploads/1/3/2/8/132816202/duwimofudu-fonodejojota.pdfIn PDF document text
    • http://kopabub.brucesbroadway.com/uploads/1/3/0/8/130874038/juduf.pdfIn PDF document text
    • http://files.bonding.no/uploads/1/3/1/6/131637606/1860893.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/1/0432/5982/2244/files/dulofemotumugokip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6690/9081/files/xoxokirajipojex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1588/7256/files/inhibition_of_protein_synthesis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1035/8439/files/pugofejaxegorigopulogij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6445/8405/files/challenge_rating_pathfinder.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6284/3797/files/setubumuzilirasen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0457/8652/9948/files/53562411503.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5557/1353/files/76053292950.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4856/6933/files/nadobevekexofup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1457/6537/files/animated_images_of_flowers_free.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000179c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x179C9 4968 bytes
SHA-256: d90efc4e894b6c684111f0b13b1da633b89490f7dee55d8585feabe0dbc38b65
font_01_sfnt_off00018a8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18A8B 14440 bytes
SHA-256: 19b9930f7de33e435915122f186874fad261a3999d9209246d119d093becfcb2
font_02_sfnt_off0001b852.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B852 16300 bytes
SHA-256: b726ae66dca6187e4690d9fec3561d19020e38fb564701f78d9328561687cb2a
font_03_sfnt_off0001cdfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1CDFA 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3