Malicious PDF — malware analysis report

Static analysis result for SHA-256 9418b6679738df15…

MALICIOUS

PDF

73.4 KB Created: 2021-01-18 05:19:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 8abead6fd2359444d236cc1a12f2e3e1 SHA-1: d05a07d592b819a38f627a086ab49dab11be05c1 SHA-256: 9418b6679738df1585c1496a366f0f871056f113c29d1314536b9f6ff598a935
184 Risk Score

Malware Insights

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

The PDF file contains embedded links that point to known malicious redirector infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, suggests a lure related to 'who moved my cheese video free download'. The presence of numerous links on disposable hosting further supports a phishing or redirection scheme. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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
  • 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://traffking.ru/123?utm_term=who+moved+my+cheese+video+free+download In PDF document text
    • https://damijuvik.weebly.com/uploads/1/3/1/3/131381376/9199367.pdfIn PDF document text
    • https://mamaganonofob.weebly.com/uploads/1/3/4/6/134602085/vegaxejupu_dudewaturazot.pdfIn PDF document text
    • https://tafibukazun.weebly.com/uploads/1/3/5/4/135400045/e14fa1827.pdfIn PDF document text
    • https://bekijarodik.weebly.com/uploads/1/3/4/6/134617997/7237958.pdfIn PDF document text
    • https://sufifikudozo.weebly.com/uploads/1/3/4/7/134715304/xatudasunomuluw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492901/normal_5fe029387f3a6.pdfIn PDF document text
    • https://xikemusuvef.weebly.com/uploads/1/3/4/3/134322181/jigitefawimakura.pdfIn PDF document text
    • https://site-1176681.mozfiles.com/files/1176681/35703249877.pdfIn PDF document text
    • https://xekawipafamut.weebly.com/uploads/1/3/4/3/134328312/tiwutegijitumepe.pdfIn PDF document text
    • https://jefabogab.weebly.com/uploads/1/3/1/6/131636769/8917299.pdfIn PDF document text
    • https://site-1236051.mozfiles.com/files/1236051/wondershare_data_recovery_android_phone.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450047/normal_5fa26a5d8eea4.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/kifutizijebuj/71604064065.pdfIn PDF document text
    • https://s3.amazonaws.com/bufipevuril/remove_duplicate_excel_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/zarelusipofox/xifazenukomana.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d61a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD61A 5236 bytes
SHA-256: 34ce6556ce3374ebf6c3ef5c65df58bdc11fa11c078e792b303aa5ec64111cf3
font_01_sfnt_off0000e7d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7D5 10216 bytes
SHA-256: a4feb78edef93e28ec42def673cd2d174ba89fa51610b35ceac366b0fe54502f
font_02_sfnt_off00010a76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A76 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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