Malicious PDF — malware analysis report

Static analysis result for SHA-256 203b15a6e6de5f62…

MALICIOUS

PDF

64.6 KB Created: 2020-12-03 07:55:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 465c5c031f755842e89a275944f3d06e SHA-1: 1e8b979e2f05968ec32c315480a92e9b3c3656d9 SHA-256: 203b15a6e6de5f6206159a467b6a85870924eb8c3e4036c920698a339f34661c
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains heuristics indicating it's a phishing lure using an SEO redirector. The primary malicious URL, https://trafffi.ru/strik?utm_term=la+dama+del+alba+y+la+barca+sin+pescador+pdf, is embedded and flagged as a high-risk indicator. Although no scripts were explicitly extracted, the PDF structure and the nature of the URL suggest an attempt to deliver a malicious payload or conduct phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffi.ru/strik?utm_term=la+dama+del+alba+y+la+barca+sin+pescador+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4375077/normal_5fa45c572da78.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410204/normal_5fa77985c9cb7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393644/normal_5fbc21d11ed10.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409394/normal_5fc17260c66f4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/structured_english_immersion.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39a0f9f1-bd72-4e78-bea7-c002983b3d4b/bifitulezadejefiwopapip.pdfIn PDF document text
    • https://s3.amazonaws.com/wuniku/algebra_and_trigonometry_sullivan_10th_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/guxosa/what_caused_the_downfall_of_ghana.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9bf54216-7196-4421-9045-ef7d055cf36a/26136406692.pdfIn PDF document text
    • https://s3.amazonaws.com/napisakaluja/zuwideleliko.pdfIn PDF document text
    • https://s3.amazonaws.com/megulu/jopadesoli.pdfIn PDF document text
    • https://s3.amazonaws.com/mozedijiz/75957470748.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6f6738d-194f-4510-ac6e-41dbe151e6b2/behaviorally_anchored_rating_scales_benefits.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a77c8ebd-33ed-4107-8172-2b6bfa19e7d3/37543128559.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9234f27-9353-43b1-9595-0ac35b6c7b73/kenworth_t370_operators_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/cubiertas_autoportantes.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 2

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_off0000b0da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0DA 5192 bytes
SHA-256: 89c778ac3cc31edbb921487decae056d8dc373fbb7c83cada1ae76489b403aec
font_01_sfnt_off0000c258.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC258 10664 bytes
SHA-256: 28b7bf3ea69fe46e4abdb24d0bcaa3889d657df6b171129489c69a90fa03e3f2
font_02_sfnt_off0000e53c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE53C 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

Open this report in the interactive analyzer, or submit your own file for analysis.