Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb7070707d3ad9f1…

MALICIOUS

PDF

85.2 KB Created: 2021-02-28 21:30:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: ab7e3a216e8f96af01fccda8b88add6d SHA-1: 40d407d30cc78f3ab58a55f443e89064b2c1be03 SHA-256: bb7070707d3ad9f1e16702c5f5ed1345b88fe89c1ad0f3f51a760f924a9d1c1d
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 phishing or trojan payload. It contains an embedded URL pointing to a suspicious domain, likely intended to host or redirect to malicious content. The document body, though heavily obfuscated, appears to contain keywords related to car maintenance, suggesting a lure to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://zajinet.ru/123?utm_term=e46+transmission+fluid+change+diy PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4366047/normal_5ff3af4b9c2f7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470402/normal_5fec85f5d3649.pdfIn PDF document text
    • https://cdn.sqhk.co/lexelinowe/Lidgiih/vintage_snowmobile_wallpaper.pdfIn PDF document text
    • https://cdn.sqhk.co/xipapotug/foxR3if/boo_berry_cereal_walmart.pdfIn PDF document text
    • https://cdn.sqhk.co/zeliravepuj/Umiglc8/escape_hunt_the_lost_temples_room_5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379473/normal_601cb0678bb57.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369165/normal_5fce97e40ef01.pdfIn PDF document text
    • https://cdn.sqhk.co/ripowusaro/6jfhcig/3749966730.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369502/normal_601de30d03581.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406466/normal_601cfcadce9cd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zuvetimimu.rf.gd/mitavefinomimekibikut.pdfIn PDF document text
    • http://jarebavax.epizy.com/sitedozoputet.pdfIn PDF document text
    • http://xesepodine.rf.gd/malwarebytes_anti-_malware_mac.pdfIn PDF document text
    • http://gunebudapuko.epizy.com/36707349785.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_off00010e31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E31 5736 bytes
SHA-256: c7373bcd0fba512e22c808aa77326728728538261704338082b4bd2fba3ecfa8
font_01_sfnt_off000121a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121A5 11352 bytes
SHA-256: 50eb642f499653b53183206492f063245af55c69b81321090dc63b9d45e9c30f