Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c0645f049b981e7…

MALICIOUS

PDF

64.1 KB Created: 2020-12-17 21:35:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 8ca65cf5ac5e40d0d6e2ec3348c8603a SHA-1: b3516beae0e4439b7c7eba9b059dfd5ed973a7ca SHA-256: 6c0645f049b981e7a676d4f735aac5994acc3c89c4068074514b12dc78a18ed6
222 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to redirector infrastructure and potentially malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware distribution. The document's structure and link farm suggest an attempt to generate traffic or lead users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://gettraff.ru/aws?utm_term=baahubali+tamil+songs+free++320kbps In PDF document text
    • https://static.s123-cdn-static.com/uploads/4370072/normal_5fc94b6aae66e.pdfIn PDF document text
    • https://jotinebemoti.weebly.com/uploads/1/3/4/6/134681432/4b206cd2f97.pdfIn PDF document text
    • https://nanagimub.weebly.com/uploads/1/3/4/6/134632235/kedatajarobeguxona.pdfIn PDF document text
    • https://venifamu.weebly.com/uploads/1/3/4/5/134501621/2809408.pdfIn PDF document text
    • https://pufukowog.weebly.com/uploads/1/3/4/5/134583281/1787137.pdfIn PDF document text
    • https://joweralifaj.weebly.com/uploads/1/3/4/3/134350132/zokit.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc0be02cd1e280355d3720a/t/5fc0fa403c02f22b9d30361e/1606482497280/50940303093.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2ffcf239b0722913f05e8/t/5fc939c28ae5b409ccaac0fa/1607023043318/balenciaga_crossbody_bag_2018.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5d1b33dfdd95b60f6dbde/t/5fd60cf89264095525c9f24b/1607863544829/tupadapavurolikaxikufag.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1057cc30a162e0c5324ce/t/5fd033eb28178304111accfa/1607480299801/yellowstone_season_1_episode_8_trailer.pdfIn PDF document text
    • https://s3.amazonaws.com/jefazaxal/cub_scout_leader_guide_2018.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bb79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB79 6008 bytes
SHA-256: ba201f6be0c7d290e3f56da800768c964d51dfd4cad0eb7fbfa85e3cceb4eea6
font_01_sfnt_off0000cfbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFBC 10560 bytes
SHA-256: 596d06e15979fa67590dc45c318099ae91cdfc143bc7ecba72e63e9307fbf255

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