Malicious PDF — malware analysis report

Static analysis result for SHA-256 f87d0568cbe91a92…

MALICIOUS

PDF

38.2 KB Created: 2020-09-10 21:30:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4b2a78bbb3d0f7c6eb74c558849541cc SHA-1: 71bd88c71aaed7ed65c5a1a991ad96bcc5ac027c SHA-256: f87d0568cbe91a923566fdd5c8dd84286e911a5ef2b5dd4626ec3efd86f55d45
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.me/wix?keyword=genetics+problems+worksheet+answer+key'. This URL is presented within the document body, suggesting a social engineering lure to trick the user into clicking it. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, further supporting the malicious intent.

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.me/wix?keyword=genetics+problems+worksheet+answer+key In PDF document text
    • http://satanovu.brianjlucas.com/uploads/1/3/2/8/132815793/xifufegobilesu-debatakiwib-nebevidupedor-kobafejetofage.pdfIn PDF document text
    • http://pugerijur.thesouthernelle.com/uploads/1/3/0/7/130775519/moripababa.pdfIn PDF document text
    • http://wanak.tlblade.com/uploads/1/3/1/1/131164250/3953803.pdfIn PDF document text
    • http://files.marialisapolegatto.com/uploads/1/3/1/3/131383681/59b165107.pdfIn PDF document text
    • http://lizedar.thepinkchateau.com/uploads/1/3/1/4/131438324/6885145.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/d13e1f_b4b6edc5b1824720ad43fa23b0332b6e.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/ee4d88_a8524aa6d88248b7a9e2d02c88cb03c5.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/111c46_500b0210533e4787b198b089765aa2d9.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/229b11_0f22e924c57d47559358af81285e6c61.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_045c7a683e3b4c32bcab05f62dbaa407.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3786/5637/files/dukojojogubijepejivowaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/0809/8205/files/eagles_injury_report_nfl.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4754/2175/files/keyboard_input_java.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/5676577217.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/1517/2259/files/the_exorcism_of_anneliese_michel.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 4

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_off000055e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55E9 5604 bytes
SHA-256: 08cdbebe7bf3630d3856bd3627ea6320e444a9b3589508646d7b8fdfa2f8ac60
font_01_sfnt_off000068e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68E4 10092 bytes
SHA-256: 6eb8c034ba221822f532855d2ca8a3eeaf2de47311197f15e77438567a118cc7

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