Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec93f37fff6a78a1…

MALICIOUS

PDF

70.6 KB Created: 2021-01-09 19:53:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 932d60a4748f7a0584826dcbbdd17f41 SHA-1: e7827df550a4a713c47a5021f1f5db4f25addf57 SHA-256: ec93f37fff6a78a1f6b2e97b301d34f1bd01017bd4a83670873ddfc35926d892
96 Risk Score

Malware Insights

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

This PDF file was flagged 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, appears to be a garbled representation of search result text, reinforcing the phishing lure.

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://traffnew.ru/123?utm_term=vicks+personal+steam+inhaler+amazon PDF link annotation
    • https://cdn.sqhk.co/tobipamu/ib2ij6V/life_is_strange_before_the_storm_trophy_list.pdfIn PDF document text
    • https://cdn.sqhk.co/kaxejelun/hdyjgi6/39286774100.pdfIn PDF document text
    • https://site-1193425.mozfiles.com/files/1193425/54700649439.pdfIn PDF document text
    • https://cdn.sqhk.co/rifusofuwedi/3bvGeBa/85465410322.pdfIn PDF document text
    • https://site-1204337.mozfiles.com/files/1204337/vabuzimetaregumalodamaw.pdfIn PDF document text
    • https://site-1171599.mozfiles.com/files/1171599/dk_eyewitness_travel_guide_amsterdam.pdfIn PDF document text
    • https://site-1168315.mozfiles.com/files/1168315/download_video_tv_sideview_remote.pdfIn PDF document text
    • https://site-1174852.mozfiles.com/files/1174852/vabirikisoletumofakurinuf.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/kotodur/golan_iii_defense_platform.pdfIn PDF document text
    • https://s3.amazonaws.com/divexikav/aviate_navigate_communicate.pdfIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/jigilirufesukuwidutoleris.pdfIn PDF document text
    • https://s3.amazonaws.com/risisipajole/tokejej.pdfIn PDF document text
    • https://s3.amazonaws.com/bisazabe/13145292536.pdfIn PDF document text
    • https://s3.amazonaws.com/jozaponi/report_viewer_2017_dll.pdfIn PDF document text
    • https://s3.amazonaws.com/gifojuxaxeva/arunagirinathar_thirupugal.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_off0000d7c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7C0 5252 bytes
SHA-256: 1683e9a12cd5e65c56222b2bf6d9a4187dfed537e141e9f0291a82725db98f5a
font_01_sfnt_off0000e981.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE981 10604 bytes
SHA-256: a3bea22dada2b13b54e95c97a4011ff068b26f5e8142f1aa10705dd6ee577385

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