Malicious PDF — malware analysis report

Static analysis result for SHA-256 06f6067f0c23eb4d…

MALICIOUS

PDF

68.0 KB Created: 2021-02-20 23:52:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a516a9a98af17e66e0926440eabbca1 SHA-1: ec26868f7bd109ecbb38ecd241ee6a38b6eb4f67 SHA-256: 06f6067f0c23eb4d0139fff12109f57ebb60d0820b3e3de05485a43c690b860b
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document body, though partially corrupted, contains text suggesting a lure related to a 'memorial sheet'. An external URI pointing to 'bologen.ru' was extracted, which is likely the intended destination for the user. No scripts were extracted, but the presence of external URLs and the phishing classification strongly suggest a malicious intent.

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://bologen.ru/wix?keyword=memorial+sheet+for+karl+liebknecht+ffcc
    • http://xploitcrew.io/starch_solution_weight_lossdfgd2.pdf
    • http://xolululumaw.iblogger.org/31940477840.pdf
    • https://mosugomepa.weebly.com/uploads/1/3/4/0/134096926/1754601.pdf
    • https://tewifevorifoja.weebly.com/uploads/1/3/4/3/134387655/3158120.pdf
    • https://static.s123-cdn-static.com/uploads/4470977/normal_5fe2f2ed6df20.pdf
    • https://static.s123-cdn-static.com/uploads/4472506/normal_600019e38dabf.pdf
    • http://scrlt.xyz/wisivakajibikozisopat4xcql.pdf
    • https://sejixegagetuta.weebly.com/uploads/1/3/0/9/130969850/3266824.pdf
    • https://static.s123-cdn-static.com/uploads/4378170/normal_5ffc8c5cb2ec2.pdf
    • http://republvinb.fun/mokefuxoxasimm9nil.pdf
    • http://trastqort.online/vuwodepurujp66.pdf
    • https://razesune.weebly.com/uploads/1/3/3/9/133986972/48886f1468455c6.pdf
    • http://ejinaya.com/python_beginning1xmul.pdf
    • https://dedotomonifagax.weebly.com/uploads/1/3/1/6/131606429/6866656.pdf
    • https://static.s123-cdn-static.com/uploads/4366364/normal_6002666e7986f.pdf
    • https://donurufeto.weebly.com/uploads/1/3/4/8/134898164/xukesirem.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://kisitibonadal.rf.gd/dokepawodakufe.pdf
    • http://rudurugineme.epizy.com/editing_and_improving_writing_ks2_worksheets.pdf
    • http://kusofiwu.epizy.com/benaam_badshah_hd_video_songs.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_off0000cd3f.bin
8b722c7ec022a1b4465ad21a2ea4fe018d273dfc656c161c05187a24f608564c
pdf-font-stream PDF embedded font (sfnt) at offset 0xCD3F 5332 bytes
font_01_sfnt_off0000df3d.bin
c8e1be0673b85993e2c44b42688e7ee1a3203052798e6807da240cdee30cf04e
pdf-font-stream PDF embedded font (sfnt) at offset 0xDF3D 10352 bytes