Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce4fbc18b1f31657…

MALICIOUS

PDF

36.2 KB Created: 2020-08-05 12:07:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d117416684c7f0f789a48042718f198a SHA-1: f38ac0272ce3a4fe75048655025af65c60dbefe5 SHA-256: ce4fbc18b1f31657937e1b02289a6245ed84dc8b145ca11fef31321de425b5cf
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one prominent URL leading to a redirector service. This redirector is associated with known malicious infrastructure, suggesting a phishing or scam attempt. The document body, though heavily obfuscated, contains the same lure text and URLs, reinforcing the malicious intent. No scripts were extracted, but the PDF's structure and embedded links are sufficient to indicate a malicious redirector pattern.

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=apprendre+francais+pour+debutant+pdf In PDF document text
    • http://files.unitedportconsultants.com/uploads/1/3/0/8/130814459/7c3fbfd9940838.pdfIn PDF document text
    • http://files.embcmanning.org/uploads/1/3/1/4/131407012/rurakisolotikirota.pdfIn PDF document text
    • http://files.deepaklalsaini.com/uploads/1/3/1/1/131164130/09a06035bc7e0a.pdfIn PDF document text
    • http://redota.hwcroquetclub.com/uploads/1/3/1/1/131164250/betebuwo-xavulotab-moduxivo-suvuzu.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/1/0433/2155/7147/files/sivuvep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4827/9970/files/6675546808.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3604/7520/files/96914738840.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6350/9143/files/durenixatox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3756/4838/files/nafakozeduviju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5362/2182/files/adi_granth_sahib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0346/9221/files/89866787135.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2172/2015/files/license_key_for_vmware_workstation_14.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0423/9783/files/95784614118.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2317/9677/files/baba_yetu_chords.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
🗂 Part of campaign: stchrislocker.com 5 samples

Related samples 7

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_off00004b6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B6F 5248 bytes
SHA-256: 6a052364e8d0b800247e5797194ff964e0b20d9779f8782aa87103b2444905b1
font_01_sfnt_off00005d51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D51 11392 bytes
SHA-256: 47375abc4869bffa62fc6217e0056d1a7e62bb9ea22608479e19a2439e0c79d6

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