Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdde052f732025ed…

MALICIOUS

PDF

80.7 KB Created: 2021-02-26 14:54:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 1770b9203ea37ed6f8e9bfc26b5a7e59 SHA-1: ddb64dc6bfdbc26e4fd0f9067870e042649f4a57 SHA-256: fdde052f732025ed97feaebb3c88b378b935daf4e4a6b57c7bdd171fb347c216
134 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The presence of external URIs and a link farm suggests an attempt to redirect users to malicious content, likely for phishing or malware distribution. The document body, though heavily obfuscated, contains references to 'cooking fever apk hack', hinting at a lure for potentially unwanted applications or cracked software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://gimoguvi.ru/wix?keyword=cooking+fever+apk+hack PDF link annotation
    • https://fotawadibegul.weebly.com/uploads/1/3/1/1/131163643/mirexiba_xisasepeluwoko_duzuxava.pdfIn PDF document text
    • http://vofufime.mypressonline.com/75573069595.pdfIn PDF document text
    • https://cdn.sqhk.co/sixojifez/Kiaidhc/soccer_star_2020_hack_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/xolokenuw/Mjcggjh/tirimewijobowabituzejov.pdfIn PDF document text
    • https://kijujiwovijuk.weebly.com/uploads/1/3/1/4/131453096/697c1568445a.pdfIn PDF document text
    • https://nixuxani.weebly.com/uploads/1/3/4/4/134433038/volaja.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419832/normal_600fca0710475.pdfIn PDF document text
    • https://vipagazowarofi.weebly.com/uploads/1/3/4/6/134685611/zamomomejurotu-degamozuxonazu-wubuma.pdfIn PDF document text
    • http://wogivodugakovek.mygamesonline.org/17397731514.pdfIn PDF document text
    • https://cdn.sqhk.co/modonasuje/hDnXv6i/smith_s_two-_step_knife_sharpener_review.pdfIn PDF document text
    • https://kixuvatapowow.weebly.com/uploads/1/3/1/3/131383305/tibaluvuwukisal.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
    • https://s3.amazonaws.com/fajujiju/tigers_quest_bobblehead.pdfIn PDF document text
    • http://wofeginu.rf.gd/what_makes_a_man_man_lyrics.pdfIn PDF document text
    • http://fojamemu.epizy.com/windows_7_loader_application.pdfIn PDF document text
    • http://kesajuwigiferu.epizy.com/bob_loveless_knife_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/dinisemowoge/zepibasubunudur.pdfIn PDF document text
    • https://s3.amazonaws.com/jitimesolagun/sims_4_skill_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxime/balotilikumas.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_off0000f31f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF31F 4924 bytes
SHA-256: 0b42171428ae3d618f7785232ba5ba668fea1a4502f751232f443ecf7eca1109
font_01_sfnt_off000103df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103DF 10412 bytes
SHA-256: 7082c65f0d7a997e4a59b52bc1fca9fa3152fa9c8c856fc040e820c7a28b9c71
font_02_sfnt_off0001279d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1279D 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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