Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c8250f984223a14…

MALICIOUS

PDF

75.2 KB Created: 2020-12-03 07:23:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7be949e58be983105348d6a7c7b13d5e SHA-1: 792846afabaf3d6943dc479cbb06543275e8bc52 SHA-256: 3c8250f984223a14433d91c017b6da5464c65b7130d45bfd33c8908316803368
96 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for an external URI pointing to 'traffnew.ru', which is highly suspicious. The document body, though heavily obfuscated, suggests a theme related to 'insect collection', likely a lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/123?utm_term=how+to+make+an+insect+collection
    • https://xitukuwelup.weebly.com/uploads/1/3/4/3/134340625/6391395.pdf
    • https://vuketuwanez.weebly.com/uploads/1/3/4/5/134592446/92b4b0286d136c.pdf
    • https://gemamiji.weebly.com/uploads/1/3/4/3/134372226/ruxup_wovunofirepoji_zetefan_getijizumulez.pdf
    • https://cdn-cms.f-static.net/uploads/4372354/normal_5f9313b443b8c.pdf
    • https://farufawajil.weebly.com/uploads/1/3/4/7/134726947/gaserukofopol.pdf
    • https://cdn-cms.f-static.net/uploads/4413456/normal_5f95cd6a073ba.pdf
    • https://wavuvavezexa.weebly.com/uploads/1/3/0/7/130775629/kuzofevoj-padisiriteme.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://static1.squarespace.com/static/5fbffbf92e34347c703edab4/t/5fc17bde145a8629dce8e292/1606515680099/taking_care_of_business_song_in_movie.pdf
    • https://static1.squarespace.com/static/5fc0055e5687f52b6b7c450a/t/5fc451b35147b14804bc8d74/1606701494329/35917282597.pdf
    • https://uploads.strikinglycdn.com/files/d33685b1-70aa-441b-8471-7b8e2b5d532b/watch_deadpool_online_free.pdf
    • https://s3.amazonaws.com/ninasivol/scoharie_tax_maps.pdf
    • https://uploads.strikinglycdn.com/files/9501878c-df4c-4286-8a95-b2d124562ef9/56639264258.pdf
    • https://static1.squarespace.com/static/5fc129dd17e7202640ebdc1b/t/5fc2d03aa97599144e54d44b/1606602814764/mri_gadolinium_toxicity_group.pdf
    • https://s3.amazonaws.com/jemazejodep/43238456812.pdf
    • https://uploads.strikinglycdn.com/files/788d92bf-6549-450f-b7e4-14608be7e8ac/xipazezokunozi.pdf
    • https://uploads.strikinglycdn.com/files/afa18b87-4427-4e19-b0ef-2871f3cb6a20/bowetike.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de9e.bin
6a29b8833be9be4a19e44f2088c59afb3eea2cb045f9cce2ca118393a1c85a6b
pdf-font-stream PDF embedded font (sfnt) at offset 0xDE9E 4752 bytes
font_01_sfnt_off0000eeb5.bin
103e393c0d3c9ee0d365693db497be2f2aad7f8565f3cdc4a918577c7bae3e6a
pdf-font-stream PDF embedded font (sfnt) at offset 0xEEB5 10076 bytes
font_02_sfnt_off00011142.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0x11142 4324 bytes