Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0f38b53eeb4469d…

MALICIOUS

PDF

80.3 KB Created: 2021-03-23 11:28:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 83d588c1a1c13bc0ccee3ee8e6695f05 SHA-1: d980fd40655cf845b735002639f4774a6b022a31 SHA-256: c0f38b53eeb4469dd604f3bc3cdb10b2d4e26028db924db3b518caf52cf3b1d6
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded URLs, with one prominent URL pointing to a suspicious domain that is likely part of a phishing or malware distribution scheme. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the document is designed to host many links on disposable domains, further supporting a malicious intent. The ML classifier and ClamAV detection strongly indicate maliciousness, likely related to phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://nipisod.ru/strik?utm_term=reliance+606+water+heater+manual PDF link annotation
    • http://nanupigib.22web.org/69349851537.pdfIn PDF document text
    • http://lipexifinidoda.scienceontheweb.net/mismeasure_of_man.pdfIn PDF document text
    • http://bekopomulasebi.getenjoyment.net/dunkin_donuts_extra_extra_creamer_nutrition_facts.pdfIn PDF document text
    • https://cdn.sqhk.co/madufuxenuw/jijaibJ/87304450461.pdfIn PDF document text
    • https://cdn.sqhk.co/pixefavenar/jjgehdW/spyro_ocean_speedway_orb.pdfIn PDF document text
    • http://kolamudeluxom.iblogger.org/trx_easy_exercises.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://uploads.strikinglycdn.com/files/0200c17a-ab13-4f92-bdc8-3324e691c317/56622384662.pdfIn PDF document text
    • http://tuzufuwav.rf.gd/27869190514.pdfIn PDF document text
    • https://s3.amazonaws.com/fikuvine/hoping_x_ambassadors_piano_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/414bd567-d521-4c1e-9b59-d9d5bf85cc2d/29857429297.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17ad4b76-2baa-480c-bb99-00ec550fe872/73853053963.pdfIn PDF document text
    • http://gevapugono.atwebpages.com/66753091193.pdfIn PDF document text
    • https://s3.amazonaws.com/jujadodedaruxix/52703514376.pdfIn PDF document text
    • http://fevoroxigur.rf.gd/the_raven_poem_by_edgar_allan_poe_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10564768-0975-4d66-91f6-72def0b477d9/proform_740cs_size.pdfIn PDF document text
    • http://sewerufuzamo.rf.gd/switch_kindle_ownership.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1fb243d-6754-48f5-8ff4-324cc11f2026/where_can_i_travel_abroad_this_christmas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fea4773b-a6bb-48da-b9e5-b104eaa44767/lixapiramexafefigepe.pdfIn PDF document text
    • https://s3.amazonaws.com/gotijejaj/22256003689.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e69a3ffa-da70-4d5d-8100-8db4ce61312b/how_to_master_reset_moto_g6_play.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0c3e0c8-2e9c-475a-ae2e-77f16e604eca/anet_a8_printable_mods.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_off0000eee7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEE7 5028 bytes
SHA-256: 8cd7546c4300c5cb0c9a27ee04b091d07c02461c6b33389040dc4fe3b8afae7d
font_01_sfnt_off0000ffd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFD8 11104 bytes
SHA-256: bd02c67270dc2a7ae9692481f7da0c08fad9a1eef8289b7b187e8ba219603b89
font_02_sfnt_off00012594.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12594 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

Open this report in the interactive analyzer, or submit your own file for analysis.