Malicious PDF — malware analysis report

Static analysis result for SHA-256 88779a8932410299…

MALICIOUS

PDF

94.5 KB Created: 2021-03-17 00:51:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a456dc02ceb52e925c31c366e04ea7b8 SHA-1: 96285cae72b14f79d59aeb64decb2057bea41bf2 SHA-256: 88779a89324102996fabb8d25edaefade5cf3f222ac45ca4e79d5870d53eeab4
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'golowaki.ru', which is likely used to redirect the user to a malicious site. The document body, though heavily obfuscated, contains text related to search queries, suggesting a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://golowaki.ru/wix?keyword=reel+mower+home+depot
    • https://koxawikala.weebly.com/uploads/1/3/4/6/134643159/6787181.pdf
    • http://idealica-official-it.website/39537292029dthob.pdf
    • http://midikakuvekume.mywebcommunity.org/pedekokitijuwugin.pdf
    • http://granitmetrospecstroy.ru/55456512635xgb75.pdf
    • https://zuzuxaze.weebly.com/uploads/1/3/4/0/134040629/8115729.pdf
    • http://hh666o.site/oregairu_light_novelc2q3i.pdf
    • http://floradoma.net/how_much_does_a_mercury_9.9_2_stroke_weight8qi80.pdf
    • https://vizijupazikek.weebly.com/uploads/1/3/2/8/132814338/b09a16c.pdf
    • http://craftsmansmetics.com/house_party_custom_story_downloadssgwoq.pdf
    • https://cdn-cms.f-static.net/uploads/4467577/normal_604acc461bf4c.pdf
    • http://wildber.store/papazanananalusobefesogos45nun.pdf
    • http://in-arenas.com/zupopubuzg1o9s.pdf
    • http://nosatines.mypressonline.com/xigevixiniwalewixesa.pdf
    • http://rawoxaxevog.mygamesonline.org/libro_la_caverna_de_platon.pdf
    • https://fudanologakobur.weebly.com/uploads/1/3/5/3/135394175/6059934.pdf
    • http://soldatskaya6.ru/quimica_analitica_vogelff48l.pdf
    • https://static.s123-cdn-static.com/uploads/4452389/normal_5fc90c6e61734.pdf
    • https://lotatodekimin.weebly.com/uploads/1/3/4/7/134705716/2739127.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://pizitibasowu.atwebpages.com/toro_518_ze_snowblower_wont_start.pdf
    • http://nabulegewuwal.myartsonline.com/xevilis.pdf
    • http://pojozija.onlinewebshop.net/rorofetifiwidunirukerom.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_off00012532.bin
f39cc6776e03e884a85b275321f1a45950e9023e88d343fd2d8dc6d6f9376379
pdf-font-stream PDF embedded font (sfnt) at offset 0x12532 4544 bytes
font_01_sfnt_off000134b7.bin
b1d7d9891d62c6c905c13f897ae8827b659246577cbdd7334dd093d616a8c72c
pdf-font-stream PDF embedded font (sfnt) at offset 0x134B7 11956 bytes
font_02_sfnt_off00015d6a.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x15D6A 4324 bytes