Malicious PDF — malware analysis report

Static analysis result for SHA-256 a69908e9e21f18cf…

MALICIOUS

PDF

96.0 KB Created: 2021-02-27 06:23:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: e20c58ba8c61f569613b1aad1fda826e SHA-1: 4952166b73ea0ddacd00bfeae271296f384b4864 SHA-256: a69908e9e21f18cfe9db00250b30c3c2982cf8f10eb4d66892188a2ac5472455
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to common computer problems, a typical tactic for social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://xezojetit.ru/123?utm_term=my+dell+laptop+won%2527t+turn+on+or+charge PDF link annotation
    • https://cdn.sqhk.co/nusatabi/jYO9eic/guilty_crown_how_many_episodes.pdfIn PDF document text
    • http://ryduslim.website/commonwealth_of_kentucky_child_support_worksheet03skw.pdfIn PDF document text
    • http://nabavawuzafurur.mygamesonline.org/11918270858.pdfIn PDF document text
    • https://cdn.sqhk.co/kegufamop/5X4DPM9/vuvokukiveziziso.pdfIn PDF document text
    • http://pawomodom.medianewsonline.com/zukilaximexeluwog.pdfIn PDF document text
    • http://jawixogu.mygamesonline.org/23361454636.pdfIn PDF document text
    • https://cdn.sqhk.co/sowojusawepu/ohe68ct/xanugiwodijisugoru.pdfIn PDF document text
    • http://famozosivupiwij.sportsontheweb.net/14.3_water_pollution_answer_key.pdfIn PDF document text
    • http://worabipupe.mypressonline.com/pemokagalebulagezopaj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fokapikow/symantec_endpoint_detection_and_response_administration_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/dagasopones/clinical_pharmacology_made_ridiculously_simple_4th.pdfIn PDF document text
    • https://s3.amazonaws.com/xakapudakadu/lanakevepikag.pdfIn PDF document text
    • https://s3.amazonaws.com/bidemewufa/loforitube.pdfIn PDF document text
    • https://s3.amazonaws.com/jipowumat/12472654717.pdfIn PDF document text
    • https://s3.amazonaws.com/gimisorixosu/gutobutinadusate.pdfIn PDF document text
    • https://s3.amazonaws.com/veledabejufi/instagram_video_er_chrome_extension.pdfIn PDF document text
    • https://s3.amazonaws.com/selivuvumepaveb/62711034423.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001398d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1398D 5388 bytes
SHA-256: 75177a291abef32c0568f1c51202f609b13f7cd9bba09e962e31696e92a54de1
font_01_sfnt_off00014c0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14C0C 11444 bytes
SHA-256: b9fd91db36beffb01ab6990e8da570ed848c8f051688e1f70092f7a51a2f5b0e

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