Malicious PDF — malware analysis report

Static analysis result for SHA-256 68cf64a330980c11…

MALICIOUS

PDF

74.6 KB Created: 2021-02-15 14:25:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ef2e2d01362f0a98d7533c339ab0f993 SHA-1: 98016875422e71a1056a90d2c236cddbc49d03a7 SHA-256: 68cf64a330980c11de93b02e34a13531ba42f39b51c8084fcc71b0a5ed37edb8
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan payload. The document body and embedded links suggest a lure related to 'Wayward Souls iOS', directing users to multiple external URLs, some of which are part of a link farm. The presence of external URIs and a link farm heuristic points towards an attempt to drive traffic or distribute further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://crophysi.ru/wix?keyword=wayward+souls+guide+ios
    • http://8gusevshop.website/shovel_knight_toaderrzv35.pdf
    • http://koteyarn.moscow/football_manager_touch_2018_mod_apkl5upe.pdf
    • https://gizipiwiro.weebly.com/uploads/1/3/1/4/131454158/91d6a559f7cd.pdf
    • http://losinglotterynumbers.com/game_centre_app_androidouu0f.pdf
    • http://domainlimax.xyz/smashbox_bb_cream_discontinuedvioy5.pdf
    • http://bigno.space/superbike_rider_wallpaperxy20w.pdf
    • http://detonic-deutschland.website/jet_games_free_for_pc398gp.pdf
    • https://vumazilizulorap.weebly.com/uploads/1/3/5/3/135300666/fevelanarapojutel.pdf
    • http://svoytrylend.xyz/will_there_be_another_series_of_what_we_do_in_the_shadowsgm409.pdf
    • https://tekemuwuva.weebly.com/uploads/1/3/0/7/130775778/gazusizujorevilaxop.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/zifozujiwi/zubefaba.pdf
    • https://s3.amazonaws.com/tixeligufokup/sample_narrative_report_in_brigada_eskwela.pdf
    • https://s3.amazonaws.com/daraniwekamidir/76179601210.pdf
    • https://s3.amazonaws.com/tojazudibumogab/welapopotazesifajone.pdf
    • https://s3.amazonaws.com/mefonevimimix/73286600286.pdf
    • https://s3.amazonaws.com/navoburarovada/june_month_current_affairs_ibps_guide.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e75e.bin
ad9995ea47f563cfc01939eb258be8d2a25ccab6cc1bf941726d34228fc3d1ae
pdf-font-stream PDF embedded font (sfnt) at offset 0xE75E 5200 bytes
font_01_sfnt_off0000f93d.bin
9ab86a841b88c95803380e3159a0ce0274852563ed62c0dafb871d3deda748ad
pdf-font-stream PDF embedded font (sfnt) at offset 0xF93D 10748 bytes