Malicious PDF — malware analysis report

Static analysis result for SHA-256 22571162e02874b3…

MALICIOUS

PDF

78.7 KB Created: 2021-02-28 12:14:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: b6e765557e1fb6daaa7626bd99b338e0 SHA-1: ced2a3628c43ca094a0c7b967268e3b94baab2e7 SHA-256: 22571162e02874b32905219906b3064f52d6c8e157f150207cf1ce97c579baa8
134 Risk Score

Malware Insights

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

This PDF was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous external URIs and is structured as a link farm, with one URL specifically pointing to a file named 'dragonvale_world_hack_download.pdf', suggesting a lure for potentially unwanted software or malware. The document body, though heavily obfuscated, contains metadata related to sheds for sale, likely a pretext for the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://resalured.ru/wix?keyword=16x20+sheds+for+sale PDF link annotation
    • https://cdn.sqhk.co/muvetowiripa/xiejf8v/dragonvale_world_hack_download.pdfIn PDF document text
    • http://shoop-fr.ru/zodimuzusizupoxofideguw401od.pdfIn PDF document text
    • http://kayikciakademi.com/zuzawutl3qx.pdfIn PDF document text
    • http://ulekschool.online/nabanogafehsszj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419412/normal_600d91ce4b2bf.pdfIn PDF document text
    • http://granitmetrospecstroy.ru/vampire_diaries_season_8_plotutr7i.pdfIn PDF document text
    • http://skidki-day.site/panodolewesapb8o1q.pdfIn PDF document text
    • https://cdn.sqhk.co/balaragu/6rjcTgf/zombies_2_werewolf_song_lyrics.pdfIn PDF document text
    • http://ourfutures.space/32387671288tadwn.pdfIn PDF document text
    • http://copyright-rules-help.com/how_do_i_fix_my_nextbook_tablet_that_wont_chargeaiky6.pdfIn PDF document text
    • http://hdsamara.ru/470556240602aqw8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454668/normal_5fc813dd42f26.pdfIn PDF document text
    • http://nozozofodedeza.iblogger.org/hl_2270dw_error_light_flashing.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459466/normal_60351469219c7.pdfIn PDF document text
    • http://pek-24.cc/76830384341bwn9z.pdfIn PDF document text
    • https://cdn.sqhk.co/bodegife/Lhbhegi/37551255530.pdfIn PDF document text
    • http://beautytopshop.site/65646212776lmurx.pdfIn PDF document text
    • http://busivel.xyz/92517741533ce70e.pdfIn PDF document text
    • https://cdn.sqhk.co/wovenebi/hfhgfge/dinosaur_jurassic_world_toys.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://lesexuxu.rf.gd/legaligugapazojugufew.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_off0000eb1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB1E 5004 bytes
SHA-256: b20ca8733a77a2e1b40638e276ee0c1beb08e4e117ea6c0836cec4937a7c5602
font_01_sfnt_off0000fc29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC29 10400 bytes
SHA-256: cfa9e89386290f7550b2afb8d4b2b8db69f6371f82d5ae0a1319bd0547e904e0
font_02_sfnt_off00011fca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FCA 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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