Malicious PDF — malware analysis report

Static analysis result for SHA-256 6caea69221e66393…

MALICIOUS

PDF

43.2 KB Created: 2020-09-01 15:54:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 38a5d7c1d35b448331cef9cc027e0ba9 SHA-1: f7da3f9a152f953112b22c8356543fe25f5a48e1 SHA-256: 6caea69221e66393145668a9e063471ae85b1ebbd0fd8a7aa464880cdd46522d
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File T1059.007 JavaScript

This PDF document employs a social engineering lure, presenting itself as content related to 'Android emulator software for pc free' to entice users to click on embedded links. The primary link, 'https://ttraff.ru/pify?keyword=android+emulator+software+for+pc+free', is identified as a malicious redirector, and the document contains a large number of links to other PDFs, suggesting a link farm for SEO manipulation. The ML classifier strongly indicates maliciousness, and the overall structure points towards a phishing or malware distribution attempt.

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=android+emulator+software+for+pc+free In 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/1/0461/9416/3863/files/bharat_chashni_song_mr_jatt.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4818/1666/files/85953550670.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0041/3856/files/zeditudebivomofura.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9894/8255/files/wotakimokefixa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4987/6630/files/20071286777.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0641/1431/files/argumentative_essay_format_apa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9723/4338/files/the_prayer_of_jabez_bible_study.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3406/7615/files/story_of_christianity_volume_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/0727/9013/files/tanker_safety_guide_liquefied_gas_3rd_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9495/0559/files/22839553950.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tevedizulav.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 3

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_off00006ae2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AE2 5384 bytes
SHA-256: 1dca92248a8caf6594bcf8cfd6a3b410852de5f43d6a0cd8aad0407742b61d94
font_01_sfnt_off00007d2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D2B 10196 bytes
SHA-256: 5382d7faa8ec2b2a93194dbefebbb65f43d493dc2146824150ee46c6869478cf

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