Malicious PDF — malware analysis report

Static analysis result for SHA-256 13ab95e3104ec583…

MALICIOUS

PDF

88.2 KB Created: 2021-04-14 15:11:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 6617365a24209b3973e882933693d91a SHA-1: d8a79a7ef11a3c370cb4481a5d6f89092a625ed3 SHA-256: 13ab95e3104ec58347bd35088c1a1bea4cacbdeb0b17ad742f77a8b39b478658
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://dugedepap.ru/strik?utm_term=zombie+dragon+5e+stats PDF link annotation
    • https://cdn.sqhk.co/jegamaxegev/ZggvvZU/street_fighter_4_hd_apk_data_download.pdfIn PDF document text
    • https://cdn.sqhk.co/veladaxuzeba/gjic1TJ/93596846221.pdfIn PDF document text
    • https://wuliwedifa.weebly.com/uploads/1/3/4/7/134753749/movexo.pdfIn PDF document text
    • https://tasidumil.weebly.com/uploads/1/3/2/6/132680907/lurabuzelajatagopepo.pdfIn PDF document text
    • https://cdn.sqhk.co/jurugaguvedu/hGYuKTq/girl_next_door_meaning.pdfIn PDF document text
    • https://goponubinolofuv.weebly.com/uploads/1/3/4/6/134695307/8525524.pdfIn PDF document text
    • https://cdn.sqhk.co/posogamumut/d8YXgfv/74446617828.pdfIn PDF document text
    • https://cdn.sqhk.co/rutisifelom/eifjezZ/fexovawavotivedepo.pdfIn PDF document text
    • https://gaturavokig.weebly.com/uploads/1/3/4/3/134317265/midekaluw.pdfIn PDF document text
    • https://cdn.sqhk.co/tubozejo/ie22Mid/14596274711.pdfIn PDF document text
    • https://cdn.sqhk.co/wedowetaso/MgdihVI/zombie_wallpaper_hd_1080p.pdfIn PDF document text
    • https://cdn.sqhk.co/mikedeto/HjigftX/hearthstone_duels_decks_druid.pdfIn PDF document text
    • https://cdn.sqhk.co/liregevo/eifCZhj/sabodamuparufubimi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7ed6558-8379-461d-86d8-1face9ac3295/super_mario_bros_2_gamestop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c3282dc-9141-4348-a057-fae6d723d33d/asrock_z87_pro4_price.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/491af04a-a790-4ef7-8dc4-4dcdab9459d5/44949244109.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06de5be2-c089-4d0a-ba9b-ab835176168a/sozerenadigirovixobof.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_off00011af4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AF4 5336 bytes
SHA-256: 04d4ecf7cf5783b660588dd417713990244a0855d1c6c33255e4b676b2545eb2
font_01_sfnt_off00012d01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D01 11340 bytes
SHA-256: ff5b3846d11cd98f1fe35f344f286fb3e863914d8b6c449a7db1f3dc4847430b

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