Malicious PDF — malware analysis report

Static analysis result for SHA-256 f996b42fa505ae6e…

MALICIOUS

PDF

78.4 KB Created: 2021-03-08 03:42:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 7c628ae8fe4c16a607c0603d1cdd19d7 SHA-1: 7a822bdabbc9a644ec0a9f25c518bb910954cafd SHA-256: f996b42fa505ae6e4612fa23d1fdb09fe03d9e604c2931ed92c4bd1df028c20f
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. The embedded URL points to a domain that is likely involved in distributing malware or phishing content, disguised as a mod for the game 'Animal Crossing'. The document body, though heavily obfuscated, contains keywords related to the lure. No scripts were extracted, but the presence of external URIs and the overall detection suggest a phishing attempt to trick users into downloading a malicious file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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 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://golowaki.ru/wix?keyword=animal+crossing+mod+apk+2020 PDF link annotation
    • http://wigigokewadusad.iblogger.org/1258653761.pdfIn PDF document text
    • http://tetupamino.mywebcommunity.org/56304329546.pdfIn PDF document text
    • https://kupujusurigov.weebly.com/uploads/1/3/4/4/134471221/7c5519add.pdfIn PDF document text
    • http://tadugebakonuged.getenjoyment.net/mizitatizenapuzevazev.pdfIn PDF document text
    • http://tivuximuliku.mygamesonline.org/will_before_we_were_yours_be_a_movie.pdfIn PDF document text
    • https://xavilisepu.weebly.com/uploads/1/3/4/2/134235747/domeguw.pdfIn PDF document text
    • http://pitikudefojeken.getenjoyment.net/learn_python_the_hard_way_not_free_anymore.pdfIn PDF document text
    • http://xilenemivagola.mywebcommunity.org/65918861699.pdfIn PDF document text
    • http://gutagige.sportsontheweb.net/25882963331.pdfIn PDF document text
    • http://sepotutudi.iblogger.org/why_is_my_fitbit_versa_lite_not_updating.pdfIn PDF document text
    • http://betizekaxu.getenjoyment.net/48365413201.pdfIn PDF document text
    • http://wijasagasipode.getenjoyment.net/acer_15.6_nitro_7_gaming_laptop_review.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/1df8f856-d20e-4b0d-b772-2588b3604848/energy_conversions_in_a_system_gizmo_answer_key.pdfIn PDF document text
    • http://jalebuvubo.myartsonline.com/sorufofejininow.pdfIn PDF document text
    • https://s3.amazonaws.com/semuxemakaw/what_is_5_out_offense.pdfIn PDF document text
    • https://s3.amazonaws.com/rabewiruzitewa/santa_cruz_hightower_lt_chain_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc1f1cd2-386d-4d99-b102-0637d057986e/boiled_egg_diet_for_weight_loss.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e485b04-a498-4c57-a91f-0a094e8b6c8e/bowazekigisimanom.pdfIn PDF document text
    • http://jifupupuf.epizy.com/pride_and_prejudice_watch_online_with_english_subtitles_1995.pdfIn PDF document text
    • http://madepadejatutof.onlinewebshop.net/how_to_clean_dr.brown_bottle_warmer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/140c444d-3565-46ef-a35d-814894112ff1/washington_redskins_name_change.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/myron_mixon_rib_spritz.pdfIn PDF document text
    • https://s3.amazonaws.com/luropiw/53068760103.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50657bbe-8f45-444d-9b3f-0a4f2d25507f/52271386424.pdfIn PDF document text
    • http://neduweleviwov.rf.gd/83961614832.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_off0000f3a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3A8 5720 bytes
SHA-256: 3e4a4b6a8a70920ab2e1493ceb834e9480f727a412827879d4041b9bf74399bd
font_01_sfnt_off00010708.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10708 10256 bytes
SHA-256: 4ff95f08e0c2b3d7fad16a718e79ed0dc1dcd8e1a7abc34f8c81ecad365c8a69