Malicious PDF — malware analysis report

Static analysis result for SHA-256 4df9ae3de1b1b3ae…

MALICIOUS

PDF

119.9 KB Created: 2020-08-23 11:53:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1033c09aff542f693a2a597c00baf5e3 SHA-1: 5ad1562173956cbea5ae779719269bf801a1902f SHA-256: 4df9ae3de1b1b3ae1b1d8d10cc279c85fd44853adb2eae13ec25ef8d10368b66
202 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The PDF also contains a link farm, suggesting an attempt to manipulate search engine results or distribute malicious content broadly. The presence of a 'download' button lure further supports the malicious intent.

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=citroen+c3+2003+manual+pdf In PDF document text
    • http://files.bridgingthegapmovementllc.com/uploads/1/3/1/6/131607374/surafiriwiri-jised.pdfIn PDF document text
    • http://fusukako.mcnamaragypsies.com/uploads/1/3/1/4/131438500/f1410b439a3.pdfIn PDF document text
    • http://xudolak.haymakerlaw.com/uploads/1/3/1/0/131070993/jolosino.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/1/0433/8316/0995/files/tumur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5446/4165/files/39427406706.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2240/9125/files/fajaxigowifiselajamuvuzug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7675/4344/files/29816488032.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5348/2137/files/fomeridexebujode.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7931/0239/files/javascript_closures_explained.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7245/4810/files/soul_s_bane_osrs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2323/5234/files/notsobot_clear_messages.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7935/1976/files/selavademip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7208/5406/files/86360490091.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00017722.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17722 5468 bytes
SHA-256: 53cf18da778c17f2d1b97f5207c463235f7856a3fc205e6152808514a365b4a2
font_01_sfnt_off000189a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x189A0 17128 bytes
SHA-256: e0c8a06be860dd3d4c29aa7fe45283d6b3d78ea95731cc8a8bde83b1a65348a1
font_02_sfnt_off0001bd76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BD76 16088 bytes
SHA-256: f1368e0d82604bf55bb40b01ac61c381dd14042cff43d793d5e70c6199447dc1

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