Malicious PDF — malware analysis report

Static analysis result for SHA-256 215696aed7dee5d9…

MALICIOUS

PDF

70.5 KB Created: 2020-12-16 11:08:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 479f671a4b9405a94f729501d96eb118 SHA-1: 56f6782e14f01ae61ccaa44b26dfb836531e3c04 SHA-256: 215696aed7dee5d95afbbbbd3b06fc1d4d71d40f9db0f5ee879a3a3d3f9e6dd7
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. The embedded URL, 'https://trafficel.ru/123?utm_term=roblox+android+apk+indir', suggests a lure related to downloading an Android application, likely a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and the presence of external URIs indicate a malicious intent to redirect the user.

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://trafficel.ru/123?utm_term=roblox+android+apk+indir
    • https://cdn-cms.f-static.net/uploads/4451227/normal_5fd2d3f321bf5.pdf
    • https://static.s123-cdn-static.com/uploads/4375698/normal_5fc6669c5ace6.pdf
    • https://cdn-cms.f-static.net/uploads/4369774/normal_5fc214b4c75da.pdf
    • http://www.opentle.org
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static1.squarespace.com/static/5fc13c726609fd0ee793905a/t/5fc5fdb33f75b16643a2401c/1606811066476/mouth_tsum_tsum_8_fever.pdf
    • https://s3.amazonaws.com/mesotodimus/ari_lennox_shea_butter_baby_song.pdf
    • https://s3.amazonaws.com/vavebufevodutob/61472384414.pdf
    • https://static1.squarespace.com/static/5fcea7b965070e0b5371f392/t/5fd650ea154d727871e9151a/1607880941100/18318658106.pdf
    • https://static1.squarespace.com/static/5fc59761084698658e7e32d0/t/5fd6d062ab1a676c729f427b/1607913570906/mirasoritoferogivudoro.pdf
    • https://static1.squarespace.com/static/5fc39b6c5687f52b6b922f37/t/5fcdbe7dfe657040d5b143ac/1607319166858/orange_eggs_on_sushi_rolls.pdf
    • https://static1.squarespace.com/static/5fcf1a7aaffad1251da81296/t/5fd70e09d654060362dfa70a/1607929354215/38458251702.pdf
    • https://static1.squarespace.com/static/5fc6b028c6d96458364a8c4a/t/5fccacbf2bc7884852b0ceeb/1607249088339/megacraft_pocket_edition_descargar.pdf
    • https://static1.squarespace.com/static/5fc00a03c6229360eca839ab/t/5fc16672e18c5c478e307d3e/1606510195797/tumapimixemamober.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://www.gnu.org/licenses/gpl.html
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000d884.bin
f325ef3f39041b387734557c5db270c272988c74666e0a639b7aca9dc892b119
decompressed-pdf-stream PDF FlateDecoded stream at offset 0xD884 5908 bytes
font_00_sfnt_off0000c74d.bin
be6634e68ac4df803eb476ab365af1396512aa5f6e756663bfe8d5dfa85c8b83
pdf-font-stream PDF embedded font (sfnt) at offset 0xC74D 5056 bytes
font_02_sfnt_off0000e76c.bin
e18769b588b87432b39119361d10c8ff121d898c5dec525d69f02254229c91a0
pdf-font-stream PDF embedded font (sfnt) at offset 0xE76C 11076 bytes