Malicious PDF — malware analysis report

Static analysis result for SHA-256 c63f568804e6ce69…

MALICIOUS

PDF

80.5 KB Created: 2021-03-15 02:21:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e7f051206a20bb04cd3b1144ceadd6af SHA-1: 6f02969407790f9feb607ffddaeadb2e00124dbe SHA-256: c63f568804e6ce69356fa07c67bdd0111266f6f67cb898f2cbff6ca6d0b4c005
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous external URIs, including one pointing to "dugedepap.ru", suggesting it acts as a lure to download further malicious content. The presence of embedded URLs and the overall structure point towards a phishing attempt disguised as a document download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://dugedepap.ru/wix?keyword=toyota+prius+repair+manual+free+download
    • https://cdn.sqhk.co/munoforifuso/NnjcD9D/82997514890.pdf
    • http://jebifawulu.mywebcommunity.org/gurifakuvuwin.pdf
    • http://e-devletodeme.net/chamberlain_universal_2-button_visor_garage_door_opener_remote_manualkk8xq.pdf
    • https://cdn.sqhk.co/tamejenonisi/jeafUJN/gefaxamuzasiwejurafonep.pdf
    • http://shortsomfj.space/ramibogikorumok9k6y7.pdf
    • http://bodyita.space/screen_recorder_with_voice_and_facecam9q56f.pdf
    • https://cdn.sqhk.co/sebutarukaw/jjghfhb/bigizubawiseti.pdf
    • https://cdn.sqhk.co/xevowuto/qie3Z6B/56276126243.pdf
    • http://opensoda.pro/35156467807w6l4g.pdf
    • http://sakivometo.medianewsonline.com/82773600749.pdf
    • http://islta.fun/software_architecture_foundations_theory_and_practice_bookdgpa5.pdf
    • http://majikok.mygamesonline.org/81372323772.pdf
    • http://fuvisetitisenon.mypressonline.com/bitmap_to_converter_online_free.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://3d7304b5-8527-495f-b913-615d6f357a43.filesusr.com/ugd/ef7486_2733f6583fe249b18b96cec4a31e1b16.pdf?index=true
    • http://gemawinikifiv.myartsonline.com/can_i_clean_keurig_with_white_vinegar.pdf
    • http://nareboveridur.epizy.com/69522238624.pdf
    • https://7ec9ed57-df89-401a-953b-45744c150cee.filesusr.com/ugd/6e3131_39f642766b9049f6b9a478ddfb070e09.pdf?index=true
    • https://uploads.strikinglycdn.com/files/df4b51bb-df39-4008-818c-a9d116e8a3bf/funny_quotes_from_percy_jackson_and_the_lightning_thief.pdf
    • https://5cbbff6b-7c47-4fbb-abda-9de5069fbc88.filesusr.com/ugd/1a89c8_652094040c9945d7a33e51d58f78fb6f.pdf?index=true
    • https://4868a29a-6d77-448d-a9c5-bc5c6a1713c3.filesusr.com/ugd/060e50_e026c50c2a894a1ebadfffc806225bbd.pdf?index=true
    • http://gesorowar.rf.gd/bumopesuwagabutevujod.pdf
    • https://uploads.strikinglycdn.com/files/0888a750-b4c3-4802-975d-230ff8e5dbc1/greek_and_latin_roots_words_cogn.pdf
    • https://7054f9d6-44ea-4b6c-8535-0d04e7cb9957.filesusr.com/ugd/963b03_2770e62b687e4c10afaf814aa7da1b26.pdf?index=true
    • 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_off0000fc95.bin
8643e728d8b50c755955571380516c0efcd9bf982db1c6eddcb335cbf9529391		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFC95 5332 bytes
font_01_sfnt_off00010eb9.bin
5413239ef19e82600769077f85e3e3dbc7297bec1d417372f1df0c0ff22d063d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10EB9 11124 bytes

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