Malicious PDF — malware analysis report

Static analysis result for SHA-256 e42cff757a4ee75d…

MALICIOUS

PDF

33.3 KB Created: 2020-08-13 12:55:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f5948172fce0eacd39f1b0a3e29a0bee SHA-1: 4e51026a81aeb37ef09064b5d4ef27029f717193 SHA-256: e42cff757a4ee75d2be8a26cc2971efe00526d6766c1c2265e514853d4eb2672
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which is also present in the document body. The document body text, though heavily obfuscated, contains the URL 'https://ttraff.cc/wb?keyword=fragment%20sentence%20worksheets%205th%20grade', suggesting a lure to download further content. The presence of numerous other PDF links, many hosted on shopify.com, indicates a link farm strategy, likely to obscure the ultimate malicious destination.

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/wb?keyword=fragment%20sentence%20worksheets%205th%20grade In PDF document text
    • http://gagukij.vickyannewrightstudios.com/uploads/1/3/1/3/131380349/jipejev.pdfIn PDF document text
    • http://files.chongai520.com/uploads/1/3/1/4/131437491/5950858.pdfIn PDF document text
    • http://files.newlenoxordnance.com/uploads/1/3/0/9/130969561/roremijeg.pdfIn PDF document text
    • http://files.mathmaniarobotics.com/uploads/1/3/1/3/131383958/3682217.pdfIn PDF document text
    • http://files.wheatlesskitchen.com/uploads/1/3/0/7/130775219/6269589.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/1/0434/9168/8610/files/monosarafatideluk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6644/2406/files/tidexibemugakipegijirib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0213/4681/files/calculus_10th_edition_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/mud_logging_handbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1791/8870/files/compressing_file_size_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3942/4669/files/dafujubajevagenixamol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4241/4492/files/wubasopegisixelejis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9868/6111/files/85205073499.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/6317908028.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4718/9670/files/jidixojetase.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5121/9104/files/kudobo.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 3

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_off000046a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46A4 5556 bytes
SHA-256: 11922877903ff080e05d73aeca74820f55ee09deb86fd283e8cf65cd93812cf5
font_01_sfnt_off0000596f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x596F 9052 bytes
SHA-256: 7d681dcdd4df9abec6ef5dfe860606f282e41c56b3a904fff8723236d1f7de14

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