Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2d8a4be9442aa57…

MALICIOUS

PDF

65.4 KB Created: 2020-11-11 14:14:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 2989a6d0b58de4ad54a61232f907d7e4 SHA-1: 95884ac0a504fb37dbf3b599548a46559b4f1da2 SHA-256: c2d8a4be9442aa5750dbe3f55079036f05987f71761b5e3ae7a3504f5f21ce57
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The file contains a large number of external links, with one notable URL being 'https://traffine.ru/123?keyword=diesel+engine+troubleshooting+pdf'. The presence of numerous external links suggests a link farm or phishing attempt, aiming to direct users to potentially malicious content. No scripts were extracted, but the PDF structure itself is indicative of malicious intent.

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
  • 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.
  • 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://traffine.ru/123?keyword=diesel+engine+troubleshooting+pdf PDF link annotation
    • https://wavutokemik.weebly.com/uploads/1/3/4/3/134309613/gabemuximaduse.pdfIn PDF document text
    • https://mesipaku.weebly.com/uploads/1/3/1/3/131383407/fapirabijifexufazun.pdfIn PDF document text
    • https://filuvinuro.weebly.com/uploads/1/3/4/4/134455556/368544.pdfIn PDF document text
    • https://kavaxaxogemiren.weebly.com/uploads/1/3/4/4/134441995/guxirofiziwabume.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/ce02014a20d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfcb8366-6073-4907-9883-a88ddd88a848/51941788348.pdfIn PDF document text
    • https://s3.amazonaws.com/pafiganovavi/96189382325.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f8774b9-94d5-4974-8213-c54dcb47e3a6/35675272680.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ccf600aa-2ca5-4722-b15f-432ceb7b90a5/ridapapo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c26493f0-a745-4fd9-9868-3702db3a229c/77889222009.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7052fa13-4241-4bce-ad6b-d20ab55d5b6b/56441343187.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_off0000c50c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC50C 5232 bytes
SHA-256: cc88bc7ef95dcc834f54561de63f6d97f4a9baedc605d9e38fafca2414d2aa9a
font_01_sfnt_off0000d6d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6D4 10220 bytes
SHA-256: 15319bfe56e4de5abe0e037a8d1566814dab70fa32aaa5d62e81b9c34ffe9b01

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