Malicious PDF — malware analysis report

Static analysis result for SHA-256 754afdf45735d835…

MALICIOUS

PDF

81.9 KB Created: 2021-03-22 19:48:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 074ea416810a5dae2d8d66cca279b774 SHA-1: af2ae0dc0ee440da5326cac9974b23a5beb3b648 SHA-256: 754afdf45735d835f2de68b16bdc34bc8b6a2cd3773ba94492e6df5593997018
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. It contains an embedded URL pointing to 'nipisod.ru', which is likely used to host a malicious payload or phishing content. The document body, though heavily obfuscated, suggests a lure related to the game 'SWTOR'. No scripts were extracted, but the presence of an external URI and the overall detection profile strongly suggest a phishing or malware distribution attempt.

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://nipisod.ru/wix?keyword=swtor+gods+from+the+machine+izax
    • https://static.s123-cdn-static.com/uploads/4446650/normal_5fccd56d98911.pdf
    • https://kadilawozozupaj.weebly.com/uploads/1/3/0/7/130739633/2579473.pdf
    • https://cdn-cms.f-static.net/uploads/4373998/normal_5fd75d9578718.pdf
    • https://nogurutofuxuj.weebly.com/uploads/1/3/4/5/134525281/52c8b92998b3ef.pdf
    • https://static.s123-cdn-static.com/uploads/4417813/normal_5fe52b720936f.pdf
    • https://cdn-cms.f-static.net/uploads/4490273/normal_5fdb014c74013.pdf
    • http://jagojurezowu.22web.org/16436292081.pdf
    • https://cdn-cms.f-static.net/uploads/4451353/normal_6011e02c06b1e.pdf
    • https://bupogoduvokog.weebly.com/uploads/1/3/4/6/134690502/1499837.pdf
    • https://sozuleku.weebly.com/uploads/1/3/5/9/135962343/repuxomenarakefi.pdf
    • https://jurugifako.weebly.com/uploads/1/3/4/8/134869201/84479a185e5.pdf
    • https://rekasefuwe.weebly.com/uploads/1/3/0/9/130969231/gemisafuv-wisotumomokuvo-fibomadulu-fewomi.pdf
    • https://ralixuviromod.weebly.com/uploads/1/3/5/3/135345966/zorep.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://maviwapas.epizy.com/resident_evil_4_hack_apk_pc.pdf
    • https://uploads.strikinglycdn.com/files/bcdaad86-2cd6-460d-9270-ea24e0c7893e/how_to_read_cobra_radar_detector.pdf
    • http://zoxebavin.rf.gd/lapuseg.pdf
    • http://furenenivigaz.rf.gd/ravewerasuparipet.pdf
    • http://rexawisoza.epizy.com/binding_of_isaac_mother_transformation.pdf
    • https://uploads.strikinglycdn.com/files/db723211-cc66-416b-b4a4-c00fc78daedc/montana_1948_full_book_online.pdf
    • https://uploads.strikinglycdn.com/files/e50d2022-0e9b-4551-b0a8-e7d0c031abcf/breaking_dawn_book_cover.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_off0000f391.bin
5042e810103404513e4dcb8fadda5989eb97ed4bcb1787591f658ddb4c7ee9b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF391 5504 bytes
font_01_sfnt_off0001063d.bin
cef0d1192f74fb044e927ff794940c2620e40a400fa1a41c370353a2ca6b48f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1063D 11096 bytes
font_02_sfnt_off00012c5b.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12C5B 4324 bytes

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