Malicious PDF — malware analysis report

Static analysis result for SHA-256 a09f217c4c6b9c01…

MALICIOUS

PDF

43.3 KB Created: 2020-08-25 12:02:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5426b39c5f2bdc2717af2b475b9caf71 SHA-1: c2eadd4554fe0cea926cd5a99ff03176f8b6dddd SHA-256: a09f217c4c6b9c01ead6fac21d29d49e372e30394f3a7a8fd10524757a3c4258
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to traff.ru, which is used in conjunction with a link farm heuristic. The document body contains text related to 'Android software emulator bluestacks' and the malicious URL. The primary malicious URL is traff.ru, which likely serves as a redirector to further malicious content.

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=android+software+emulator+bluestacks In PDF document text
    • http://pejomut.ohayosensei.com/uploads/1/3/1/4/131437502/baveboliduvupe.pdfIn PDF document text
    • http://files.innovativeel.com/uploads/1/3/1/1/131164112/a314b645.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/1/0433/7316/6757/files/vidik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6572/9429/files/felarogedar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8640/4000/files/91525404493.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0595/9588/files/last_carnival_acoustic_cafe_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5573/5193/files/42533616572.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4639/5304/files/mukowatigowa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1846/0072/files/coca_cola_brand_identity_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7026/6273/files/bagatowimenarojavuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1770/7425/files/84115420031.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2997/8526/files/takeboxoxalusoxafefudoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0936/7454/files/the_sum_of_its_parts_quote.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3049/4878/files/nuvulelinis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7923/6760/files/arduino_bluetooth_code.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_off00006c81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C81 5452 bytes
SHA-256: f881ab8f36f2e4b4935abfd797654a88e4868e1b830e8ee8ede9e2bb9d0dd854
font_01_sfnt_off00007eff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EFF 9868 bytes
SHA-256: a65df4ce3714bbe995239175d3e0885ef7b750aa0e75a480145a69e820e12ceb

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