Malicious PDF — malware analysis report

Static analysis result for SHA-256 11ea0da75152dcd4…

MALICIOUS

PDF

72.2 KB Created: 2021-06-01 02:33:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 12318a969e89ea357c7cc4b35157fd0d SHA-1: 0314bf7f801c9d8b4c51efdb37bf34e0590df127 SHA-256: 11ea0da75152dcd4ef61091b0ade2f5380609baba8cc0beb494a476267739cb4
126 Risk Score

Malware Insights

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

The PDF contains embedded URLs and heuristics indicate it functions as a link farm, directing users to potentially malicious sites. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution, disguised as a Minecraft resource pack download. No scripts were extracted, but the PDF structure and URLs point to a lure for further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://queure.ru/pbw?utm_term=minecraft+xray+resource+pack+download PDF link annotation
    • https://botebagi.weebly.com/uploads/1/3/4/8/134870763/pivirot.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501482/normal_601360a5a7a1d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425235/normal_6015399393464.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375073/normal_5ffd6f4ea51b1.pdfIn PDF document text
    • https://wipamixupes.weebly.com/uploads/1/3/4/4/134460990/vidobidesakul-jopafanunuduxit.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456999/normal_602826502fa9c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lakebimutep.pbworks.com/f/37378335532.pdfIn PDF document text
    • http://zelovoguvunu.pbworks.com/f/30129911986.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5bb37395-88c5-498f-b69e-dd59b05feabf/fifty_shades_of_grey_movie_story_in_tamil.pdfIn PDF document text
    • http://kedetuwi.pbworks.com/f/90037660388.pdfIn PDF document text
    • http://niwomif.pbworks.com/f/small_comprehension_passages_for_grade_4_online.pdfIn PDF document text
    • http://bofamawetodo.pbworks.com/w/file/fetch/144433059/18354650959.pdfIn PDF document text
    • http://buvavipoluvu.pbworks.com/w/file/fetch/144423909/51261903338.pdfIn PDF document text
    • http://lekuzax.pbworks.com/f/what_is_psychoanalytic_theory_of_personality.pdfIn PDF document text
    • http://mikabipi.pbworks.com/f/free_download_adobe_flash_player_for_mac_os_x_10.5_8.pdfIn PDF document text
    • http://kapetipubi.pbworks.com/w/file/fetch/144426462/mit_lock_picking_guide.pdfIn PDF document text
    • http://mikabipi.pbworks.com/f/how_to_draw_a_mountain_landscape_for_beginners.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e4b8cee-4550-4d24-a2e2-60069778a7f9/what_is_3_phase_transformer.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_off0000dd0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD0C 5480 bytes
SHA-256: 280110127cb4ab5095d1be3a97d53b463b98a64c1e4d2c856571a80b04438bc4
font_01_sfnt_off0000efee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFEE 10676 bytes
SHA-256: 262b5bcd33497530d9b879f863634aae172f23642c44d218a713dd587dc35dfb

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