Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4599c9bdea1193c…

MALICIOUS

PDF

72.6 KB Created: 2021-03-17 19:13:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c94c32b0194d8c160aa6956221e61eb2 SHA-1: 19f4034cc9a3a4fb6e36649171cb8ba49c94222e SHA-256: d4599c9bdea1193cadee67da735e8d0c1e06c9b23a032103a9e91c34dfa261ae
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an external URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to 'Goose down fill power guide', which is likely a pretext to mask the malicious activity.

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://ponafet.ru/123?utm_term=goose+down+fill+power+guide
    • http://niludop.22web.org/wubibiwifajopebesireg.pdf
    • https://zufajutikeg.weebly.com/uploads/1/3/4/3/134355725/lufor.pdf
    • http://lazotub.mywebcommunity.org/95938802724.pdf
    • https://kowirakixodoxe.weebly.com/uploads/1/3/4/4/134467502/lipilutekezeluzo.pdf
    • https://lejawoxaniw.weebly.com/uploads/1/3/0/7/130738778/4683308.pdf
    • https://cdn-cms.f-static.net/uploads/4422372/normal_602889a57bae7.pdf
    • https://static.s123-cdn-static.com/uploads/4366357/normal_5ffb8833d3416.pdf
    • https://cdn-cms.f-static.net/uploads/4373782/normal_6023455594e8d.pdf
    • https://cdn-cms.f-static.net/uploads/4446651/normal_60192c1159495.pdf
    • https://cdn-cms.f-static.net/uploads/4483842/normal_603f499263728.pdf
    • https://static.s123-cdn-static.com/uploads/4383924/normal_5fc9a80f3ebee.pdf
    • http://bazufilonunax.iblogger.org/28052930393.pdf
    • http://vosajizegek.mypressonline.com/lavesuluvokiti.pdf
    • https://cdn-cms.f-static.net/uploads/4489409/normal_604787b5e73be.pdf
    • https://cdn-cms.f-static.net/uploads/4481988/normal_604029580889b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/votuweroxigezog/ginuko.pdf
    • http://relizaki.epizy.com/26740047108.pdf
    • https://s3.amazonaws.com/rovuweraja/how_to_clean_a_frigidaire_affinity_washing_machine.pdf
    • http://vibesiwag.epizy.com/how_to_start_writing_project_report.pdf
    • http://piloxezerepijaf.rf.gd/2019_ram_1500_slt_towing_capacity.pdf
    • http://femagela.myartsonline.com/71229909143.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_off0000de45.bin
d5797def58295b4c109e67347ec2b086c22fcac71ecd3da6ef5825fe6baf0d9d
pdf-font-stream PDF embedded font (sfnt) at offset 0xDE45 5124 bytes
font_01_sfnt_off0000efde.bin
b28868dc673036e5fb9a8247e4c5db23f3552317daa212477778abcdcca5182b
pdf-font-stream PDF embedded font (sfnt) at offset 0xEFDE 10952 bytes