Malicious PDF — malware analysis report

Static analysis result for SHA-256 7db71c65bdeb28ac…

MALICIOUS

PDF

40.4 KB Created: 2020-08-14 10:11:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 429ab1884ea8b23461125d68a0923bc6 SHA-1: 061e285cf888e0a8dd73fab8f993b95ab9bb28fd SHA-256: 7db71c65bdeb28ac25d1f7428b2d1d78a5beddbda98a71ac8cf309291f810de5
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.ru) which is flagged as malicious. The document body, though partially corrupted, includes the text 'Fruit dna extraction lab answers' and the malicious URL, suggesting a lure to trick users into clicking the link. The presence of a link farm and a malicious redirector indicates an attempt to distribute malicious content or phish for information.

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.ru/pify?keyword=fruit+dna+extraction+lab+answers In PDF document text
    • http://files.brookeboersma.com/uploads/1/3/1/8/131856100/ripaxo.pdfIn PDF document text
    • http://files.noroc.org/uploads/1/3/1/8/131871569/noxebebifavale.pdfIn PDF document text
    • http://files.jacquelineperrydesigns.com/uploads/1/3/1/3/131378897/rulasipefuzatap-wizolope-kivumaf-wupagezujekuxu.pdfIn PDF document text
    • http://kunum.hawaiicreativemedia.org/uploads/1/3/1/6/131606248/jamure_piberifawekofup.pdfIn PDF document text
    • http://files.kinglenatcornerstone.com/uploads/1/3/1/6/131637606/54449a36e72d5.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/1/0428/8148/2919/files/72030722440.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2423/5170/files/basic_of_c_programming_language_tutorial_filetype.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3692/5342/files/kinugusinoxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5974/7745/files/big_book_of_nursery_rhymes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2729/1544/files/74678345037.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7408/5279/files/risobatomatavitolanefe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6509/8908/files/jomesasilixufep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5004/8420/files/14316139828.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8068/6491/files/kewugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7542/7735/files/xanomu.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 2

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_off0000609c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x609C 5188 bytes
SHA-256: c573ee863bc0727e1fcc602d02ad6cfebf16acd753dadb27d9f93f169647dfdb
font_01_sfnt_off00007259.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7259 10072 bytes
SHA-256: 09fad60e29ef3c84b1aacf8cf10db9686294ce2797b10cfc378db555db3a5c97

Open this report in the interactive analyzer, or submit your own file for analysis.