Malicious PDF — malware analysis report

Static analysis result for SHA-256 54e3dbad02e2212b…

MALICIOUS

PDF

106.7 KB Created: 2021-03-31 23:00:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f9850e6159f2ec59c05153453b55fef SHA-1: e576e289a277babbe324ea33e4620b1a9ddaf51e SHA-256: 54e3dbad02e2212b181d899a1494d8b5b0334287676111aa616d348315f796e6
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains a large number of external links, a technique often used for SEO manipulation or to distribute further malicious content. While no scripts were explicitly extracted, the PDF structure and the presence of numerous external links suggest an attempt to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • 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://druttle.ru/wix?keyword=harvest+of+fear+worksheet
    • https://zaxizibu.weebly.com/uploads/1/3/4/6/134672664/belosesawokulibefono.pdf
    • https://static.s123-cdn-static.com/uploads/4366015/normal_5fe1a58f3826f.pdf
    • https://jetorijeroxu.weebly.com/uploads/1/3/4/6/134693882/7956471.pdf
    • https://rajilogibakew.weebly.com/uploads/1/3/5/3/135326989/nupab.pdf
    • https://cdn-cms.f-static.net/uploads/4447912/normal_604d4122db361.pdf
    • https://bozuluxowefag.weebly.com/uploads/1/3/5/3/135349757/b005c02d350b9c.pdf
    • https://static.s123-cdn-static.com/uploads/4501212/normal_5ff3e94e4c585.pdf
    • https://cdn-cms.f-static.net/uploads/4487905/normal_6044dd81e6e29.pdf
    • https://mewupigokudupez.weebly.com/uploads/1/3/0/7/130738506/4914639.pdf
    • https://cdn-cms.f-static.net/uploads/4426279/normal_600ca426b4423.pdf
    • https://lumodafudewose.weebly.com/uploads/1/3/4/4/134480169/8986495.pdf
    • https://static.s123-cdn-static.com/uploads/4404105/normal_5ff52b31b2908.pdf
    • https://static.s123-cdn-static.com/uploads/4446038/normal_5ffa77576e425.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://13cfbe10-32e4-4d7a-9072-8dbd3280e6b8.filesusr.com/ugd/994e9e_36cebf7579fd4cd9b7129cc00a44a59d.pdf?index=true
    • https://s3.amazonaws.com/makumapikeze/how_to_clean_shark_rotator_professional_vacuum_filter.pdf
    • https://s3.amazonaws.com/pusixa/kikamug.pdf
    • https://s3.amazonaws.com/bogeguva/19249208832.pdf
    • https://s3.amazonaws.com/varoximu/nomaluj.pdf
    • https://69f7c7ec-f776-4f8b-90c4-e8126cd531e3.filesusr.com/ugd/772020_ee31a67a3c3a49ab901ace5394763bd9.pdf?index=true
    • https://911f1565-2faa-4874-b261-330d521e7362.filesusr.com/ugd/f46427_153fcb810f87442f91679ea302a971f8.pdf?index=true
    • https://s3.amazonaws.com/polexebuj/why_did_god_turn_water_to_wine.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00016589.bin
1c422ea1d4e2da6831fd821110e7deba4a242d4a32b9e1f1aa0cb2d93251a514		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16589 5000 bytes
font_01_sfnt_off0001769d.bin
0c588ebfcd4824504e56f04e745a1e80754dc2b60cea88820d3e15e11a24df9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1769D 11216 bytes

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