Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2cf843d1c6c1217…

MALICIOUS

PDF

84.2 KB Created: 2020-12-07 22:59:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: abb849e1d168ca33598c729e9132c436 SHA-1: 8d0091cb99bdcd03ba93d8516c73536488644fad SHA-256: e2cf843d1c6c12179e4dd2c5f93b314ec84d0b45357fd497b323452f74b518b4
104 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'trafficel.ru', which is likely intended to deliver a secondary payload or redirect the user to a phishing site. The document's content, though heavily obfuscated, appears to be a lure related to a 'Marshall stockwell speaker manual'. No scripts were extracted, but the presence of an external URI and the ML/AV detections strongly suggest a malicious intent to trick the user into downloading or interacting with malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wb?keyword=marshall%20stockwell%20speaker%20manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4447250/normal_5fbd2cd3503f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404112/normal_5f97ca6fe1461.pdfIn PDF document text
    • https://palifeselaliku.weebly.com/uploads/1/3/4/4/134441248/5943611.pdfIn PDF document text
    • https://paviliwele.weebly.com/uploads/1/3/4/4/134489687/ravubifetafusefenam.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375204/normal_5f8d5f33163f8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://static1.squarespace.com/static/5fc64bd4084698658e8310f1/t/5fcd119f9aa2de0c6498b5d9/1607274912092/46930767278.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e335a5bc066edfa5a857/t/5fc258c81972c46e3cea93e3/1606572233769/14123430969.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/119171f0-dd68-4de6-8473-9715081d5d08/kvalitne_matrace_akcia_kapsule.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8f916e3-01e0-44c0-9da2-65c08f538fdf/38129513701.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/627f1e58-9594-42ba-babd-b96a3a582191/jegupagexepogolazodage.pdfIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/bty_cost_report.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c2e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2E3 3440 bytes
SHA-256: 2779707e64e3433e050478ef39929c0bfc0ef320b21609b5216275dff6174df5
font_01_sfnt_off0000cf23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF23 5336 bytes
SHA-256: 549e02181261f552bfcc18e8979d3c1cc3c88cc83c6270e4f4cb508fa6d6a43c
font_02_sfnt_off0000e139.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE139 2232 bytes
SHA-256: 550407cae82d34704de3910030b8a6309bbe513723384b240864ac7e43bdf51c
font_03_sfnt_off0000ead6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAD6 6640 bytes
SHA-256: 2da83060ad210a9a1743b04a22b2cc5ebb14ba7af64fbaa5f25da2d26a1b3d84
font_04_sfnt_off0000fc74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC74 15744 bytes
SHA-256: 753d2451c458b5342fc2583f50a6902ced5c7a6f9cd45d4fbd1656d8b0b7d7ec
font_05_sfnt_off00012b3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B3E 16684 bytes
SHA-256: a858ad06ee9285ef990c8ccf5509e6bce71cae8afc7f99ba8a1dcaf33198b628

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