Malicious PDF — malware analysis report

Static analysis result for SHA-256 487ad31b44890b15…

MALICIOUS

PDF

76.1 KB Created: 2021-02-15 22:33:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 5aa1200f2d250ba175724d9ec84323c6 SHA-1: bea35ed695ca8dc4c696c6ec44c13eb1b81158ee SHA-256: 487ad31b44890b150ef6f3bf11e8380efa9838d60df717094c37a483b0a3c2a8
244 Risk Score

Malware Insights

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

This PDF file is identified as malicious by multiple heuristics and a machine learning classifier, specifically flagging it as a redirector and a link farm. The document body, though heavily obfuscated, contains text related to 'Sims 3 showtime redeem code', suggesting a lure. The embedded URLs point to known malicious redirector infrastructure and a large number of links hosted on disposable domains, indicating a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/strik?utm_term=sims+3+showtime+redeem+code In PDF document text
    • https://cdn.sqhk.co/vanewano/eiiDj1g/fozunojiwu.pdfIn PDF document text
    • https://cdn.sqhk.co/vibisimak/ivjaDAK/55589265678.pdfIn PDF document text
    • https://cdn.sqhk.co/giripiponi/S92VjbJ/41991780841.pdfIn PDF document text
    • https://cdn.sqhk.co/lilovenodi/ZjibmK9/dunkin_donuts_menu_prices_munchkins.pdfIn PDF document text
    • http://nipikul.22web.org/yanni_tribute_sheet_music.pdfIn PDF document text
    • https://tarebizadutobi.weebly.com/uploads/1/3/4/3/134310067/dc893905d8.pdfIn PDF document text
    • https://cdn.sqhk.co/vakenuda/iirrhge/italian_music_instruments_names.pdfIn PDF document text
    • http://gefejisu.22web.org/rixamubezaxibevawifoxi.pdfIn PDF document text
    • https://cdn.sqhk.co/ferorigife/x7jggdv/w3schools_html_tags_list_download.pdfIn PDF document text
    • https://cdn.sqhk.co/kigowabalo/bQIjijj/10223667250.pdfIn PDF document text
    • https://didowaxa.weebly.com/uploads/1/3/4/3/134387091/daduvorizaxa_damitatubotig.pdfIn PDF document text
    • https://cdn.sqhk.co/zolewiko/gfTijij/98888040159.pdfIn PDF document text
    • https://cdn.sqhk.co/pujunuzivas/ehihggU/race_max_game_mod_apk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zoxutuperovizo.epizy.com/gloomhaven_extra_character_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/zafijukopa/android_gamer_call_of_duty.pdfIn PDF document text
    • http://fufajapikimideb.epizy.com/wudizikigaferipexunawibud.pdfIn PDF document text
    • http://moliwofasekimu.epizy.com/bitabegufuvugo.pdfIn PDF document text
    • http://limebeb.epizy.com/aashiqui_mein_teri_new_song_ringtone.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_off0000ecf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECF0 5296 bytes
SHA-256: aed080ae81d2e6536aaa7fb85b921d371e9473c681e55522867464b4e9c46030
font_01_sfnt_off0000fee0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEE0 10556 bytes
SHA-256: b7ce1e824a874bd6b4cddf6d998122fdd59eaad575aa62c7f1b710c01f924f12

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