Malicious PDF — malware analysis report

Static analysis result for SHA-256 df759111e4bb142c…

MALICIOUS

PDF

41.5 KB Created: 2020-08-10 14:51:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 42ca311a55272440a6ccb566bf68acb1 SHA-1: 255883fa471aad96176d16a06a1b180d195ff710 SHA-256: df759111e4bb142c266b730a4fe84c40b5db3e43d867a97c705cce837726a43b
194 Risk Score

Malware Insights

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

The PDF contains a deceptive title and numerous links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm or SEO poisoning tactic. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=definicion+del+sindrome+de+asperger+pdf', indicating the document's primary purpose is to redirect users to malicious infrastructure. No scripts were extracted, limiting the analysis of further payload delivery.

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=definicion+del+sindrome+de+asperger+pdf In PDF document text
    • http://files.bbawakeblogs.com/uploads/1/3/1/4/131437268/66807.pdfIn PDF document text
    • http://files.mansfieldmc.com/uploads/1/3/0/9/130969942/kaserumimo_jezega.pdfIn PDF document text
    • http://mereka.crsurfzone.com/uploads/1/3/0/7/130775971/pemodidirojed_tufufebiwutu_reguvuxuti_diludawaxuv.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/1/0433/2060/6885/files/gerunigug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7926/2615/files/banking_maths_book_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5501/4298/files/brother_dcp_l3551cdw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8747/0496/files/cognitive_behavioral_theory_model.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/71299233386.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9071/4532/files/34573119218.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81108552740.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2398/3015/files/printable_ged_practice_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8334/7606/files/afghanistan_calendar_1397.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2834/9079/files/negemidifarosugem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6656/4507/files/82504911362.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3486/9921/files/endodontic_treatment_failure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/2329306662.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 8

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_off000061d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61D8 5476 bytes
SHA-256: e03d92778567ea96054bd49d8b65b50093a5a3a4c2a2153c157a9ab235edf173
font_01_sfnt_off00007461.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7461 10744 bytes
SHA-256: 517f79682a3bc18169d61857643b4fb842cd94fd3835dd9dcc170da87872731e

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