Malicious PDF — malware analysis report

Static analysis result for SHA-256 140e181263ddf322…

MALICIOUS

PDF

45.6 KB Created: 2020-08-07 12:41:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4e06145701b923f85d941f701316f6e1 SHA-1: 39624fe8617bc9ae83577b3e7e42e13bc60714c8 SHA-256: 140e181263ddf32277674fdb2a97ac3fa93b2f2832a223d217d2758e6f64b0e9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that redirect to malicious infrastructure, specifically identified as a redirector for SEO link farming. The document body, though partially corrupted, contains the URL that is also present in the heuristics, indicating a lure to download further content. The ML classifier strongly flagged this PDF as malicious.

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.com/pify?keyword=tipos+de+sustantivos+en+ingles+pdf In PDF document text
    • http://files.agateinspections.com/uploads/1/3/2/6/132682899/6fb4097.pdfIn PDF document text
    • http://bevovubep.3sooglobal.com/uploads/1/3/1/3/131379732/xalenerodunevij-toraxofufej-zunesabo-wataxu.pdfIn PDF document text
    • http://files.holidayplanners.co.in/uploads/1/3/1/1/131163872/4749138.pdfIn PDF document text
    • http://files.smarten.org.uk/uploads/1/3/1/3/131380849/76d92b9e797.pdfIn PDF document text
    • http://files.gwionraven.com/uploads/1/3/0/7/130739776/4916943.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/1/0433/2004/9822/files/minub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1608/5923/files/88910314457.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2651/3048/files/romobozewalegax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1097/4111/files/sijodomeburo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9660/3814/files/jifop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4693/5445/files/pudog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/nitilabisugosamewibukeka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1682/2692/files/bezolon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8967/3888/files/xajatudasu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6387/8566/files/86664786978.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5556/2398/files/xevurerajivokilirited.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7005/3784/files/viredog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6938/2568/files/wafejovo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1568/3744/files/bot_emoji_discord_copy_and_paste.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_off00007287.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7287 5124 bytes
SHA-256: 53c602bd5f28e3c1253ba8d950c575c379d2f1dfccbf5b3956d792653d127b09
font_01_sfnt_off00008419.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8419 11400 bytes
SHA-256: cc9a02f54be32a06c7ba042cb972a41acd0e384280a42b8e57509af18a9d5cd2

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