Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0b84adcc1ee1c0a…

MALICIOUS

PDF

38.9 KB Created: 2020-08-06 21:52:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 36c8c9c539f57116862577531e543b0d SHA-1: e1a3a43925c9be818e4b5623fee2abe4469c1d65 SHA-256: a0b84adcc1ee1c0a55b7d1495225d44d659172a7cb18b8094916526de7b9bf90
202 Risk Score

Malware Insights

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

The PDF contains a "call-to-action" phrase and multiple embedded URLs, including one identified as a malicious redirector. The primary malicious URL, https://ttraff.ru/pify?keyword=english+to+gujarati+dictionary+free+download+pdf+file, is presented as a download link for a dictionary, likely a lure to trick users into visiting a malicious site. The document also hosts a large number of links to other PDFs, suggesting a link farm or SEO poisoning tactic.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=english+to+gujarati+dictionary+free+download+pdf+file In PDF document text
    • http://files.elohims.org/uploads/1/3/2/6/132696263/divav.pdfIn PDF document text
    • http://files.simplybreezyphotography.com/uploads/1/3/0/8/130874115/lebagifami.pdfIn PDF document text
    • http://files.samanthaamatoportfolio.com/uploads/1/3/0/7/130738792/ff795e7197291.pdfIn PDF document text
    • http://files.streetfightersunitedkingdom.com/uploads/1/3/0/8/130874064/2331943.pdfIn PDF document text
    • http://files.gskubitz.com/uploads/1/3/1/4/131437363/bijuwufe.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/1/0434/0924/4316/files/xobemesumerowozululural.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9780/8285/files/figufu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/jedizad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8804/4442/files/423234735.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6500/7509/files/volide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0602/4101/files/bash_command_cheat_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/takotuvupi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5553/8595/files/pokemon_gold_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4760/8730/files/vavisabatexerejexanuromen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2860/3295/files/56693763580.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5279/2982/files/69594763642.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5560/4121/files/numbers_worksheets_11_20_pdf.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000056f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56F1 5644 bytes
SHA-256: 146dce4d5b20ede11628b3cb71f1afa4351c51c9f66136092c03744dd2b64118
font_01_sfnt_off00006a47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A47 10564 bytes
SHA-256: 189566c37c44bc6ffc2feee0f338dc06ad24c626130ae983a76cb14d7b21ac7e