Malicious PDF — malware analysis report

Static analysis result for SHA-256 8731f56c9576d9bc…

MALICIOUS

PDF

29.8 KB Created: 2020-08-18 14:42:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 89bee6b8b756319aaaefba014173e7e7 SHA-1: 2623260de11a3918b02646e75066208f66f6424d SHA-256: 8731f56c9576d9bcb6191d32e2b138f36c274b9adb3ff039f850c8262d583f9c
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is designed as an image lure, presenting a screenshot to entice users to click a link. The primary link, 'https://ttraff.ru/pify?keyword=cute+couple+kiss+hd+wallpaper', is identified as a malicious redirector, likely leading to a phishing page or malware download. The document also contains a large number of links to other PDFs hosted on Shopify, which are likely part of an SEO link farm to obscure the malicious redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 29 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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=cute+couple+kiss+hd+wallpaper In PDF document text
    • http://files.natgastrucks.com/uploads/1/3/1/4/131438137/c905d5.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/1/0427/6197/8023/files/printable_bingo_chips.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8266/1526/files/61137247300.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99231100330.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3695/8104/files/wazezunovuvubazer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8927/0686/files/top_augmented_reality_apps_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8519/3621/files/bodyboss_ultimate_body_fitness_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4659/0872/files/88670128273.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5960/1830/files/74390776384.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0372/4455/files/lubuni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9563/7659/files/80754773630.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 1

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_off00003dbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3DBE 5220 bytes
SHA-256: dece103558889480773d000a4a2ba76df3af09c9bea39c6b094f8110dbce249b
font_01_sfnt_off00004f86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F86 7968 bytes
SHA-256: e689adc45a7cea7d64be75628682654131477d49be16cff07894852e60ece3b4

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