Malicious PDF — malware analysis report

Static analysis result for SHA-256 2aacfe17c704187c…

MALICIOUS

PDF

82.4 KB Created: 2021-06-01 08:58:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a98a09921d526428bd34182e7f12ab84 SHA-1: dd20877cb8aef882b91b12cf27e2505377ef92a0 SHA-256: 2aacfe17c704187c85f2f0dd40783c8475aa6244ef2780ac238434bbc5bd3489
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous external links, identified as a 'PDF_SEO_LINK_FARM' heuristic, directing to various PDF files and a primary URL. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically classifying it as a phishing trojan. The embedded URLs likely serve as a distribution mechanism for further malicious content or phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://pixomot.ru/pbw?utm_term=what+is+the+21+irrefutable+laws+of+leadership
    • https://cdn-cms.f-static.net/uploads/4392661/normal_601712464ea5e.pdf
    • https://nakubiwakuja.weebly.com/uploads/1/3/7/5/137511820/dbebfdb5393b1.pdf
    • https://cdn-cms.f-static.net/uploads/4451376/normal_600d2798c3f01.pdf
    • https://mowozawufela.weebly.com/uploads/1/3/4/2/134234907/da1ec7f15.pdf
    • https://cdn-cms.f-static.net/uploads/4387709/normal_60546f7a88141.pdf
    • https://cdn-cms.f-static.net/uploads/4412154/normal_601e83fb2e7aa.pdf
    • https://fovivijidilel.weebly.com/uploads/1/3/4/8/134888041/335633.pdf
    • https://cdn-cms.f-static.net/uploads/4447466/normal_5fd6367fae711.pdf
    • https://cdn-cms.f-static.net/uploads/4481055/normal_603b3b801761d.pdf
    • https://cdn-cms.f-static.net/uploads/4393197/normal_6028396f3252d.pdf
    • https://cdn-cms.f-static.net/uploads/4410965/normal_6057c08ae88b8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/dd9dc7b5-9be9-4884-b01d-d9f59430833d/kumakixewupixamexope.pdf
    • http://lakebimutep.pbworks.com/w/file/fetch/144418206/how_to_pass_your_permit_test_in_minnesota.pdf
    • https://uploads.strikinglycdn.com/files/f4143ce3-723b-4004-8e0b-bcf1de46c95a/87732880418.pdf
    • http://zeladejan.pbworks.com/w/file/fetch/144441372/wawilerefepitezinawazopim.pdf
    • https://uploads.strikinglycdn.com/files/1590aaa8-a706-44cd-b1d8-04b64d78bcd4/dyson_ball_canister_vacuum_reviews.pdf
    • http://neruwuk.pbworks.com/f/15694432467.pdf
    • http://mumasenekera.pbworks.com/w/file/fetch/144426759/todipixawonojewezizu.pdf
    • http://banusiv.pbworks.com/f/epl_live_streaming_iphone_app.pdf
    • http://risoxef.pbworks.com/w/file/fetch/144436827/how_to_set_time_on_lacrosse_atomic_clock.pdf
    • http://negovijalulu.pbworks.com/f/xoruxoxadekanujilugofoju.pdf
    • http://pusavivo.pbworks.com/f/54037091255.pdf
    • http://xojifot.pbworks.com/f/borneo_motors_accident_reporting_centre.pdf
    • http://nefusim.pbworks.com/w/file/fetch/144434571/77644548702.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_off000104a3.bin
3eb120fcf9f37b8381cac8918fdeb677bdad0bc1ad5d009b2669a969614ccc03		 pdf-font-stream PDF embedded font (sfnt) at offset 0x104A3 5560 bytes
font_01_sfnt_off0001179c.bin
cf0c14bbb303af9c059d39f803ae01a8d8011df746ceea8e0a2367ad7fe8cc7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1179C 10724 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.