Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fd6f3570a7fe058…

MALICIOUS

PDF

69.1 KB Created: 2021-01-13 02:46:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 822e9570257a620209726c6dd3221ce1 SHA-1: 05ea8c26c2388cae389c511fec60594629160d0a SHA-256: 7fd6f3570a7fe058beab6f89999cab8fa91a118f22b0666de78974fcffea77c9
156 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a phishing or malicious document, with a high ML classifier score and ClamAV detection. It includes external URIs and a link farm, suggesting an attempt to direct users to malicious sites. The document body, though obfuscated, appears to be a lure related to an "answer key", which is a common tactic for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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/aws?utm_term=surface+area+of+triangular+prism+answer+key PDF link annotation
    • https://site-1205776.mozfiles.com/files/1205776/muteruxanonozulila.pdfIn PDF document text
    • https://nawopudupavipe.weebly.com/uploads/1/3/4/8/134856820/pevatumasixe_noxoge_zowuza_pivalazozur.pdfIn PDF document text
    • https://site-1176940.mozfiles.com/files/1176940/smart_wifi_light_switch_no_neutral_wire_uk.pdfIn PDF document text
    • https://site-1171954.mozfiles.com/files/1171954/all_stars_cricket_match_2020_squad.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/pugomonapoxuxe/vpn_apk_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/dapekufoxiraku/install_apk_fire_tv_stick_adb.pdfIn PDF document text
    • https://s3.amazonaws.com/jajoxulabojaso/73750814144.pdfIn PDF document text
    • https://s3.amazonaws.com/ladojenefe/19635898694.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzamada/92683312079.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzamada/47773536488.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC84 5696 bytes
SHA-256: 6d38337025ca655dbaeb3f702c9f3eee78902f6381f1e7f7a34aa0089a86f6c0
font_01_sfnt_off0000dfed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFED 11568 bytes
SHA-256: f016d236689bdc4e0a864236218e7d2226d64f85329c6c3b7d8bbd96694c5a70

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