Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a8659fa2c71f1c4…

MALICIOUS

PDF

72.6 KB Created: 2021-01-03 06:51:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: fecf8d0366511d0f6fdea011c171f86d SHA-1: 987af8936902d278567af4d9a9d59249647c5487 SHA-256: 8a8659fa2c71f1c48db3b8c15a5255f3256368fbe71e2fbeded253ec96595c0c
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The embedded URL `https://traffnew.ru/aws?utm_term=what+is+the+best+sheetrock+joint+compound` suggests a phishing or scam lure, attempting to trick users into believing they are viewing search results. The presence of multiple external URLs, many with unknown reputations, further supports the malicious nature of the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffnew.ru/aws?utm_term=what+is+the+best+sheetrock+joint+compound PDF link annotation
    • https://cdn.sqhk.co/mojikeke/hLsgdkO/zagowutebaxedovevewib.pdfIn PDF document text
    • https://vedemolo.weebly.com/uploads/1/3/4/7/134702866/givamotimuk-mefopi-sewew.pdfIn PDF document text
    • https://cdn.sqhk.co/wifurovud/ja8ibjg/dead_space_impossible_guide.pdfIn PDF document text
    • https://nurigefisigutip.weebly.com/uploads/1/3/4/6/134628418/9706230.pdfIn PDF document text
    • https://cdn.sqhk.co/saseponirifa/jjdOhj6/74502818948.pdfIn PDF document text
    • https://dosedupuwosiwoz.weebly.com/uploads/1/3/0/7/130776272/7510a903dfba.pdfIn PDF document text
    • https://gawugabel.weebly.com/uploads/1/3/4/3/134361726/4036375.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jokotaziweluge/indian_constitution_bare_act_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8dd2fb5-56cb-4603-af30-3f72e93c0c7a/14618036072.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a53bdc5a-2e3f-43a8-9bbe-48df53620a54/john_deere_gator_825i_s4_service_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05322df2-a21f-44cd-8849-964a9edc78f2/natubabafedusig.pdfIn PDF document text
    • https://s3.amazonaws.com/nagev/biwoxebuxizoju.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_off0000dd6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD6B 5572 bytes
SHA-256: 936f6f005c41c163860f8da5e45597bf1f156eb6c2ed745adbdd65e30550b4e1
font_01_sfnt_off0000f03d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF03D 10448 bytes
SHA-256: 558b0c3eca9de5596aacc6c6cb7de715752af05276af7a85ddf3707d2a8dee24