Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ba8ad9e15c8ab18…

MALICIOUS

PDF

81.9 KB Created: 2021-03-02 03:00:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 8f8eff88b30285c6e6005eb8d1db8417 SHA-1: b90db16664c6398db7003b27998d3c74d89a65aa SHA-256: 7ba8ad9e15c8ab18aac34b040761cf7be05295e56b38a3ef91a9b9e60ab98865
244 Risk Score

Malware Insights

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

The PDF contains multiple links to known malicious redirectors and disposable hosting sites, indicating a phishing or malware distribution attempt. The document body's title, 'What does the pathfinder pledge and law mean', is likely a lure to entice users to click on these malicious links. The presence of malformed exploit streams and ML detection further supports the malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • 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://dafemum.ru/wix?keyword=what+does+the+pathfinder+pledge+and+law+mean In PDF document text
    • https://cdn.sqhk.co/totimujid/shcijoN/kujupepimakukozaj.pdfIn PDF document text
    • http://devlp.club/aladdin_2019_movie_song_pagalworldgkw1k.pdfIn PDF document text
    • http://gamedv.design/streamlabs_live_streaming_app_downloadvklpi.pdfIn PDF document text
    • https://cdn.sqhk.co/lepavenujal/f58WBtm/install_google_earth_street_view_free.pdfIn PDF document text
    • https://cdn.sqhk.co/tazuxalana/giOXicV/curvy_punch_3d_hack_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/baxijaxazixi/AjbRMie/85365945205.pdfIn PDF document text
    • https://cdn.sqhk.co/wozejodes/McjijjT/xabidezixivawasamupap.pdfIn PDF document text
    • http://hhizmet.com/degoo_ultimate_pro_apk8x5u8.pdfIn PDF document text
    • https://cdn.sqhk.co/lakabarobuk/OMjeGjf/485289820.pdfIn PDF document text
    • http://instapriz365.site/61699508446s7rpv.pdfIn PDF document text
    • https://cdn.sqhk.co/baxewoxevum/ii4hjnH/art_therapy_definition_easy.pdfIn PDF document text
    • https://cdn.sqhk.co/sowumavag/g3hicid/all_video_player_hd_download.pdfIn PDF document text
    • https://cdn.sqhk.co/pulununese/hnHiez5/balloon_dog_jeff_koons.pdfIn PDF document text
    • http://creditscorecard.info/solutedupirimototoruzojitwadpe.pdfIn PDF document text
    • http://fortysgjdk.fun/logakotoxutusitutoxolijejics.pdfIn PDF document text
    • https://cdn.sqhk.co/ragejeli/jejjhfa/santorini_palace_hotel_fira.pdfIn PDF document text
    • http://gudelew.mywebcommunity.org/8452918969.pdfIn PDF document text
    • http://zukirudon.mypressonline.com/can_you_use_fragrance_oil_in_a_reed_diffuser.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://girofili.myartsonline.com/pemajokexigomapumipadaruk.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f66d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF66D 5348 bytes
SHA-256: b0e0f9ae0a5a579d03e0b24b974bfccf0b33830939e58cbaae8439176f42b4dd
font_01_sfnt_off00010884.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10884 10284 bytes
SHA-256: 116c771b86f1ab5eaaf669df6bab1d7028f73efef8f9378a6b4e9dd8a830e2c9
font_02_sfnt_off00012bbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BBF 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361