Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6b97042edc0bf1d…

MALICIOUS

PDF

42.3 KB Created: 2020-08-28 11:45:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 182e2386f3a8acce2fb7a95288666584 SHA-1: b0fa6480f36618a17a599fdf17765bf8e4109e50 SHA-256: a6b97042edc0bf1dc7e1b05f7a7c2f775d9d271d2279d1ed6a9d413e2839a89e
194 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a redirector service, which in turn leads to a malicious URL. The document body, though partially corrupted, suggests a lure for a 'free download' of a travel guide. The ML classifier strongly indicates maliciousness, and the PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the presence of links to known malicious infrastructure. No scripts were extracted from this sample.

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=dk+eyewitness+travel+guide+great+britain+free+download In PDF document text
    • http://files.derrickanthonyking.com/uploads/1/3/1/4/131454505/199e8f7f22d.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/1/0433/3928/4645/files/crusader_quest_weapon_upgrade_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0266/6906/files/pepiradakazagafagiluwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9336/0791/files/assam_tet_book_2020_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5074/5512/files/30115365744.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6160/8599/files/gomalonileb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7720/6178/files/punjabi_couple_wallpaper_full_hd.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6116/5723/files/lisoripuviribamobuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1848/5923/files/sukidewanevefozajurimuje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1965/5579/files/crazy_eye_emoji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5286/6463/files/asterix_and_obelix_the_golden_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0608/9640/files/26180057091.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 4

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_off00006648.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6648 5532 bytes
SHA-256: 4eaa6c59f33ae8b52300b60b6fbcf09703abf64e1069b15ba1e2e23fd0d84789
font_01_sfnt_off0000794f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x794F 10316 bytes
SHA-256: ac86a004e56a9be6d6b3aef09d851eeaab06d060e16c5fe7c81c4ca035d93cb8

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