Malicious PDF — malware analysis report

Static analysis result for SHA-256 2baabe9e13545a2d…

MALICIOUS

PDF

80.2 KB Created: 2021-02-08 19:47:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 50138d7e7b0eb263c62deb1ecbe0318d SHA-1: 88d5c2050f5f66e49a0e14c38f51afc2ab1e29b5 SHA-256: 2baabe9e13545a2dc88e697919893f5369583e75a0f3b73ca608b912bf1e772d
186 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including ClamAV and an ML classifier, indicating it is likely a phishing or malware distribution lure. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious content. The document body, though heavily obfuscated, appears to be a lure related to a 'Henry Cavill workout plan PDF'. No scripts were extracted, but the PDF structure itself is used to host and present these malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://jacksth.ru/wb?keyword=henry%20cavill%20workout%20plan%20pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4455672/normal_6000497ebf8dc.pdfIn PDF document text
    • http://ketousa.site/destete_sin_lagrimaskhswj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425227/normal_600d9ff5e5369.pdfIn PDF document text
    • http://slamelina.website/sanopipumevi5i7k7.pdfIn PDF document text
    • http://milky-rp.space/c_multiple_choice_questions_and_answers5ptma.pdfIn PDF document text
    • https://zusajozaza.weebly.com/uploads/1/3/1/3/131381142/fda999063.pdfIn PDF document text
    • https://cdn.sqhk.co/ruwonumatag/jdFhctZ/road_trip_movie_gif.pdfIn PDF document text
    • http://bestpriceforukraine.xyz/pixel_car_racer_toyota_crownw19ox.pdfIn PDF document text
    • https://cdn.sqhk.co/vomisape/ijgcjis/jadeka.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365636/normal_5fce336d63713.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369769/normal_5fdc6160ceccd.pdfIn PDF document text
    • https://cdn.sqhk.co/tubefajuvolu/jahh3gh/wifi_signal_strength_meter_apple.pdfIn PDF document text
    • https://cdn.sqhk.co/zegofurop/ijjX5ge/women_s_nike_sportswear_color-_block_jacket.pdfIn PDF document text
    • https://cdn.sqhk.co/jigugabopu/LWpidjh/pedejutidobotew.pdfIn PDF document text
    • https://cdn.sqhk.co/joremeve/NhgBOhg/star_live_wallpaper_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370062/normal_5fe80ac72d5cc.pdfIn PDF document text
    • https://cdn.sqhk.co/wixexozesila/3DbCjdH/64424564157.pdfIn PDF document text
    • https://cdn.sqhk.co/dajebala/iahfgeT/woxogup.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC66 5132 bytes
SHA-256: 7985541c5595f55bd667a7423fb9d206421312ff516c75d594afcc445fb1b042
font_01_sfnt_off0000fdfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDFC 11500 bytes
SHA-256: dcc7029fc0599f711f0aac816c1da1490233c5303da773c3bfc81c887c734078
font_02_sfnt_off00012555.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12555 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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