Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd75d7010a87bf6b…

MALICIOUS

PDF

152.9 KB Created: 2021-03-16 23:33:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44134a25d54e46f51a0ef2c4a6acc081 SHA-1: d3ce792fbe52e27bd5c9da218e9f7c1e28110813 SHA-256: cd75d7010a87bf6bc97e2ad2394a5f41d32f545e0da8882a6f4f926ee8df0f56
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. The embedded URL and document body suggest a lure to download further malicious content, likely for phishing or malware distribution. No scripts were extracted, but the PDF structure itself is suspicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

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://pelibifir.ru/wix?keyword=cub+cadet+2146+manual
    • http://gonuzigodu.iblogger.org/tiger_cub_scout_leader_handbook.pdf
    • https://cdn.sqhk.co/nowazedadara/jeqnjiw/lubusomagaw.pdf
    • https://cdn.sqhk.co/dukasavubu/f1Kgifh/30608855327.pdf
    • https://cdn.sqhk.co/kosadara/Zh8wiid/88639155830.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://marobow.epizy.com/nateroraf.pdf
    • http://gevokibip.epizy.com/54688912390.pdf
    • http://kamofonitefate.rf.gd/65831612100.pdf
    • https://cccd2283-d272-450a-840b-6541230ebad2.filesusr.com/ugd/5de1df_66c7649d48da44a487c8d8d87166eebc.pdf?index=true
    • https://uploads.strikinglycdn.com/files/42dca827-095b-45fd-beee-cfcd1b2ce63f/11542893247.pdf
    • https://uploads.strikinglycdn.com/files/7456362a-b164-4947-b0a5-07e7f96a793a/juxibidajilusuwuvimavoni.pdf
    • https://1d812fcc-cfc3-4558-a870-56fc5b7f4c2e.filesusr.com/ugd/754d94_53d2ce76bf0447e394f813ca6bb15be7.pdf?index=true
    • https://uploads.strikinglycdn.com/files/e4785739-b2c6-4951-a1cc-494be7dca73b/sensus_water_meter_parts.pdf
    • http://kunijudodo.rf.gd/vans_old_skool_altas_plataforma.pdf
    • https://ebd73b9a-b255-48a5-b781-2bd84b483b4c.filesusr.com/ugd/956c05_1d5cd9ba8fa443179e371bcf37317470.pdf?index=true
    • http://mawekipabotore.epizy.com/grohe_kitchen_faucet_weight.pdf
    • https://s3.amazonaws.com/bufexa/48269340240.pdf
    • http://tonubugiloroluv.rf.gd/bojekobenuvefuge.pdf
    • https://uploads.strikinglycdn.com/files/c49caf36-aa82-4551-b3ce-57c3734dae4f/the_odyssey_characters_and_motivations_book_5.pdf
    • http://figedid.rf.gd/lupipa.pdf
    • https://s3.amazonaws.com/tidigudetefumof/giwigoxowafupinirabex.pdf
    • http://nixefafezas.rf.gd/navy_master_at_arms_eval_bullets.pdf
    • https://uploads.strikinglycdn.com/files/a28a4a87-a00d-4ced-9557-ae77672ed7f3/75788098921.pdf
    • https://s3.amazonaws.com/zuwimadaneb/b._t._c_syllabus_2018.pdf
    • https://s3.amazonaws.com/lososimap/midon.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_off00021b88.bin
bec361b3f909c6c7c75500e350ce7b60866461ec69e8a6905f712dc5c46459dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x21B88 5280 bytes
font_01_sfnt_off00022d72.bin
d1500764c3cdee1b62d99d2120927f79d7bef77152b7f174fc348607d24b70d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x22D72 11652 bytes

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