Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e9a10422fe5e9b9…

MALICIOUS

PDF

39.9 KB Created: 2020-08-12 02:41:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 62ca6198af2396b91c257bc34ef749e4 SHA-1: 766b3a9dd8dddc3c2576aa0dd7f370de21e8898d SHA-256: 4e9a10422fe5e9b903cc895b7d2f8e8d72824cf6fcf7ac90d2e3a7f50a0da8d2
202 Risk Score

Malware Insights

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

The PDF file contains a link farm and a redirector link, indicating a social engineering lure. The document body, though heavily obfuscated, contains text related to 'pharmacy books free download pdf' and the malicious URL. The primary malicious URL is https://ttraff.ru/pify?keyword=pharmacy+books+free+download+pdf, which likely leads to further malicious content or malware.

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=pharmacy+books+free+download+pdf In PDF document text
    • http://fuvinobim.balboabayvbc.com/uploads/1/3/1/4/131482975/vefaxowake.pdfIn PDF document text
    • http://wovekilix.miguelcravo.com/uploads/1/3/2/6/132682076/ded0089493fa3.pdfIn PDF document text
    • http://files.gailyountsartwork.com/uploads/1/3/0/9/130969211/0c0439a12a6.pdfIn PDF document text
    • http://tekodo.linmog.co.uk/uploads/1/3/2/7/132740494/1695717.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/1/0433/0687/7080/files/ranugebiwuzejivuzuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3318/2886/files/98666579810.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1042/4985/files/6077296048.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3752/2080/files/22664873687.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8131/1132/files/3630356261.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84005007378.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3809/7051/files/alcestis_bangla.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2613/6731/files/lozifopazokob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/9473/2953/files/napologagegot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5247/3252/files/46159905827.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/british_vocabulary_list_for_ielts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9223/0823/files/windows_10_home_keygen.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 5

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_off00005b91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B91 5796 bytes
SHA-256: 2ef1ed7adbc88e3a6db22dbfee388ee5c4b55f29c7fcaebf09e18ee6180551ac
font_01_sfnt_off00006f33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F33 10432 bytes
SHA-256: c82f0d300cbf40c52c312d7320a3dbe879fa21b97f13ef2f05a47bb7ad74de40

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