Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3fe8e26da50e9aa…

MALICIOUS

PDF

43.1 KB Created: 2020-08-21 17:41:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 36bbdc23c0a95a9456f480eaef3e023b SHA-1: b4b3cd09728a7a2e19b0df8cd1a823690ce8c633 SHA-256: a3fe8e26da50e9aaa244ae9058c99d01dc97466496120240ca76faabcca4bdb6
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector infrastructure at 'ttraff.ru'. The document body and embedded links suggest a lure for software downloads, specifically 'adobe pdf for macbook pro'. The ML classifier strongly indicated maliciousness. No scripts were extracted, but the PDF structure and link analysis are sufficient to infer a phishing or redirection attack.

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=adobe+pdf+for+macbook+pro In PDF document text
    • http://vaper.andersonolineacademy.com/uploads/1/3/0/9/130969042/772d7c3404a.pdfIn PDF document text
    • http://files.mylunarsign.com/uploads/1/3/1/8/131857482/6fcae3.pdfIn PDF document text
    • http://fepota.jamespattison.org/uploads/1/3/2/6/132681647/pezisipe-novuv-rewav-daradi.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/1/0440/1761/4998/files/manual_j_heat_load_calculation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1734/6982/files/4175227151.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1446/3394/files/limetojaki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8572/5857/files/microsoft_works_6-_9_file_converter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5785/7187/files/best_video_editor_android_without_watermark.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5756/9176/files/vopij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8590/5576/files/85296763489.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0549/9801/files/73662747050.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 8

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_off0000695b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x695B 5284 bytes
SHA-256: b7949aad39c03c3dd0418c19ce43bc0d256c83eeb061169ed94db0ba6634fdc3
font_01_sfnt_off00007b3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B3B 10944 bytes
SHA-256: 15c336605adff0783d66b140988df22519617851ddb0b1a10ca57faa3ef84bfe

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