Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbb56c712ee1a6fa…

MALICIOUS

PDF

77.3 KB Created: 2021-03-08 18:54:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a8357f013b4d338eabf42e83240fefd SHA-1: d1f8e0278cd36bf8b9fb4a8fa999a128d45dcc33 SHA-256: fbb56c712ee1a6fac80a6231294dd5e0a5dfbcacc7d041e5b71e1c8ef9c30c3e
96 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, with the primary one being https://bologen.ru/award?keyword=cinematography+tips+pdf, suggesting a phishing or credential harvesting attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of external URIs and the overall detection suggest the document is designed to redirect users to malicious sites, likely as part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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/award?keyword=cinematography+tips+pdf
    • https://cdn-cms.f-static.net/uploads/4463825/normal_5fd819c9bc3a5.pdf
    • http://roxedizusugu.mywebcommunity.org/which_sbi_credit_card_is_best_for_students.pdf
    • http://wumewil.sportsontheweb.net/vizio_e320vl_remote_app.pdf
    • https://wiruwopifezub.weebly.com/uploads/1/3/4/3/134345133/zoxezesovizineju.pdf
    • https://zaduguwage.weebly.com/uploads/1/3/0/8/130874015/jisotisivowuge.pdf
    • http://fesotisifofil.mygamesonline.org/18924060694.pdf
    • https://cdn-cms.f-static.net/uploads/4408875/normal_6033394726522.pdf
    • https://damajarulapo.weebly.com/uploads/1/3/0/7/130738748/vofopalebuku_rusoxipisas_puvusuxukuv.pdf
    • https://static.s123-cdn-static.com/uploads/4499300/normal_6008fc0faa713.pdf
    • https://vekerarefatada.weebly.com/uploads/1/3/4/8/134868636/2400864.pdf
    • https://static.s123-cdn-static.com/uploads/4417531/normal_5fcbd6e25d0ef.pdf
    • https://cdn-cms.f-static.net/uploads/4449421/normal_5fdc339dacfb3.pdf
    • http://rezubodojel.medianewsonline.com/vevusuwivigexuwen.pdf
    • http://kudukudimox.sportsontheweb.net/33710096809.pdf
    • http://jakesubinosol.scienceontheweb.net/81583929281.pdf
    • https://static.s123-cdn-static.com/uploads/4392871/normal_6008db8a07490.pdf
    • http://baramijotafexo.mypressonline.com/how_to_set_a_citizen_eco_drive_watch_e650.pdf
    • https://cdn-cms.f-static.net/uploads/4416791/normal_602225032885b.pdf
    • https://static.s123-cdn-static.com/uploads/4426815/normal_5fdcea2529d91.pdf
    • https://static.s123-cdn-static.com/uploads/4495858/normal_5fec399f74805.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/132afda4-60ff-4b27-b98a-92bea2bb5e8b/47124422817.pdf
    • http://tevaluzax.atwebpages.com/wijafefabovupibe.pdf
    • https://uploads.strikinglycdn.com/files/3060df4f-b3e2-4fdb-b514-25aa38a18705/how_to_adjust_exposure_on_canon_rebel_t5i.pdf
    • http://zubiluwetij.myartsonline.com/how_to_change_epson_8350_bulb.pdf
    • https://uploads.strikinglycdn.com/files/db2e23a1-19a9-4122-88dd-0a38adc80a6b/23300234671.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_off0000f22f.bin
76406e9b5e283d72da84aeb53f53c28e8a29414fefe507ac5add47738d0281cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF22F 5428 bytes
font_01_sfnt_off0001047f.bin
3e1621ec5a070d98edc3370287fe9e0e8e35e4e7ad1d5c671b6e06dd52cc6ed1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1047F 10176 bytes

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