Malicious PDF — malware analysis report

Static analysis result for SHA-256 d616dddaaed1604b…

MALICIOUS

PDF

65.0 KB Created: 2020-07-26 05:16:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8f63457e49c5b9290258d0ca2276c828 SHA-1: a3b5172f23f7bc6d1c4d6602c8bf434e49b004b3 SHA-256: d616dddaaed1604ba4048fb3c8aafd033382b6733e85abc6c662e369bbe6b5dc
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF file contains a large number of embedded links, many pointing to Shopify domains, which is characteristic of a link farm designed to distribute traffic to malicious sites. One prominent URL, 'https://ttraff.ru/pify?keyword=electrochemistry+important+questions+and+answers', is flagged as a malicious redirector. The document body, though heavily obfuscated, suggests a lure related to 'electrochemistry important questions and answers'. The heuristics indicate the PDF is a malicious redirector and part of a link farm.

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=electrochemistry+important+questions+and+answers In PDF document text
    • http://files.womanbloom.org/uploads/1/3/1/3/131380308/faruperivew.pdfIn PDF document text
    • http://files.lifesabeautifulmess.com/uploads/1/3/0/7/130775888/09ad748cf90.pdfIn PDF document text
    • http://files.quantelab.org/uploads/1/3/0/7/130776167/zakegarovowedaj.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/1/0432/4016/1435/files/lujurujulapuwiba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2159/0951/files/79840233496.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9459/8047/files/vagesijinemodogebexar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7731/2405/files/tesiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7179/8436/files/16197174181.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8808/5143/files/jovevumozupebeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5296/6812/files/nulagab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5871/6054/files/dizirunobelodesixiwude.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7967/2735/files/24850855630.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1490/6275/files/91558624146.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4536/3610/files/muwexesawejemopijaxaxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/54974006552.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1709/9685/files/61623824757.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9324/5590/files/44269797749.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 5

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_off0000be9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE9D 5472 bytes
SHA-256: b353f7f298fc4b5955ae3d5f920feb3d6ba05469cec86f4481d8ab64b8426b46
font_01_sfnt_off0000d11a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD11A 10856 bytes
SHA-256: 7c8d7c74f00e8a08ab6bcc0ddda32f1d7fbd62f89b44b077b471fd04ef4e88e3

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