Malicious PDF — malware analysis report

Static analysis result for SHA-256 d466140af452a4cf…

MALICIOUS

PDF

80.4 KB Created: 2021-03-17 16:42:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2f0e50fa356394f373bf818667da85e1 SHA-1: 1126b8fc950d847f2d969cb164264c73dbf1bfcd SHA-256: d466140af452a4cf978b32257a48a89db07029298f646fccd3908620d7a16ad9
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further confirm the malicious nature of the file. The document body, though heavily obfuscated, appears to be a lure related to a book review, likely intended to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://xezojetit.ru/strik?utm_term=netter%2527s+anatomy+coloring+book+review
    • https://cdn.sqhk.co/xedomobedusi/ifdgcgc/honda_grass_cutting_machine_dealers_in_kolkata.pdf
    • https://cdn.sqhk.co/vetukalujir/qIs3hep/steamship_authority_parking_phone_number.pdf
    • http://kadanijojabuf.mywebcommunity.org/96601746675.pdf
    • https://cdn.sqhk.co/jivumigen/ibnEE7m/sejasovoveripogazan.pdf
    • https://cdn.sqhk.co/lakivasulis/ihjfiiG/raspberry_jam_cake_topping.pdf
    • http://mofobawosenej.mygamesonline.org/89271727344.pdf
    • https://cdn.sqhk.co/fapewejav/ghkhajb/texigemagebe.pdf
    • http://gojavodevagajuw.mygamesonline.org/14340216669.pdf
    • https://cdn.sqhk.co/zitiwofiru/hf8jbjb/my_dolphin_show_2_y8.pdf
    • https://cdn.sqhk.co/kugoxepif/0hiihic/70573193809.pdf
    • https://cdn.sqhk.co/gulizate/hExiiIj/revheadz_engine_sounds_full_apk_download_free.pdf
    • https://cdn.sqhk.co/savageven/jeOjggd/super_santa_kicker_2_unblocked.pdf
    • https://cdn.sqhk.co/motanunika/jT2rsif/resident_evil_movies_any_good.pdf
    • https://cdn.sqhk.co/limiwebu/djjHSOt/33343008916.pdf
    • http://nefozufovi.scienceontheweb.net/83842169555.pdf
    • https://cdn.sqhk.co/tevosudav/Pu6gegg/yahoo_messenger_apkpure.pdf
    • https://cdn.sqhk.co/lotidonita/jAB2mxw/brothers_in_arms_3_apk_download.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://miwewugewu.atwebpages.com/26720972686.pdf
    • http://fuxuxasezid.atwebpages.com/57835432454.pdf
    • http://wumugajus.onlinewebshop.net/disuvufirevu.pdf
    • http://xiwozoget.atwebpages.com/15691934091.pdf
    • http://refusunono.onlinewebshop.net/nubugo.pdf
    • 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_off0000f82b.bin
aad96876494f03d7630df4e961e82cea1979930bb38e998d5dc16b141e37e33f
pdf-font-stream PDF embedded font (sfnt) at offset 0xF82B 5580 bytes
font_01_sfnt_off00010b3f.bin
8e3f3596bea661b95489ce524b6c226aed5ee83ab9a7d0ab2ec9af0c27642de5
pdf-font-stream PDF embedded font (sfnt) at offset 0x10B3F 12444 bytes