Malicious PDF — malware analysis report

Static analysis result for SHA-256 8162e911f8113034…

MALICIOUS

PDF

74.7 KB Created: 2021-03-23 11:42:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ed20798f460646be854691a227a0b2b5 SHA-1: a4b0c2e80781cfad8115423915ea7aa3b9cd6bf3 SHA-256: 8162e911f8113034c12316ff814a1c270bc1cde04831bb1facaf11601b445319
126 Risk Score

Malware Insights

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

This PDF file is identified as malicious by multiple heuristics and a machine learning classifier, with ClamAV detecting it as a phishing trojan. The document body and extracted URLs suggest a lure related to a 'football live tv app', directing users to potentially malicious websites. The presence of numerous external URIs and link farm characteristics indicates an attempt to redirect users to harmful content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://bologen.ru/123?utm_term=football+live+tv+app
    • https://nivikaxixigimom.weebly.com/uploads/1/3/5/3/135322477/kasoku-puvavivodizoxit-kujezosola.pdf
    • https://vafunaparixidi.weebly.com/uploads/1/3/4/6/134627598/8012568.pdf
    • https://cdn-cms.f-static.net/uploads/4418567/normal_5fd644ccbbfa6.pdf
    • https://cdn.sqhk.co/bexefoboxevi/igiljh4/blue_moon_lyrics_dean_martin.pdf
    • https://tedotedonux.weebly.com/uploads/1/3/0/7/130775879/6589598.pdf
    • https://cdn.sqhk.co/kipezipilojo/jd6hcID/shell_m_racing_oil.pdf
    • https://mepokebifonamos.weebly.com/uploads/1/3/4/0/134096039/8856987.pdf
    • https://cdn-cms.f-static.net/uploads/4417413/normal_5fd194d271269.pdf
    • https://static.s123-cdn-static.com/uploads/4388820/normal_5fed7ed1e97cc.pdf
    • https://cdn.sqhk.co/sezabaxo/thaggxJ/td_bank_us_business_account.pdf
    • https://cdn.sqhk.co/xenudipu/ijNjggh/animal_print_runner_pink_curtains.pdf
    • http://zomusip.iblogger.org/jukeropuxi.pdf
    • https://cdn-cms.f-static.net/uploads/4374203/normal_60339343ecf54.pdf
    • http://maporirunigis.22web.org/jp_3-_12_cyberspace_operations.pdf
    • https://tewedarutomos.weebly.com/uploads/1/3/2/3/132302993/2376332.pdf
    • https://cdn-cms.f-static.net/uploads/4379605/normal_6050e730435ab.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://moxawaten.epizy.com/gafiruvi.pdf
    • https://uploads.strikinglycdn.com/files/56250134-1c7d-422b-b391-3d792fc585e8/notume.pdf
    • http://demunoj.epizy.com/tosifemafu.pdf
    • http://favigagiwu.epizy.com/cisco_ie-_1000-_8p2s-_lm_datasheet.pdf
    • http://misebupafavo.rf.gd/newobiditasemegizanuwo.pdf
    • http://vijatabudevibe.epizy.com/actionscript_3_game_programming_university.pdf
    • https://uploads.strikinglycdn.com/files/9e984aa3-3885-4dc7-bba8-15e6b1ade725/how_to_set_zoom_audio_output.pdf
    • https://uploads.strikinglycdn.com/files/e13de1df-36e7-4c87-8b7e-44cf7f369076/how_many_pages_does_the_book_11_22_63_have.pdf
    • http://rufopanapoxo.rf.gd/93734777098.pdf
    • https://uploads.strikinglycdn.com/files/c9ac253b-9ff6-4152-b78e-d01e8ade6493/tozodoz.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_off0000e7fb.bin
42f240e6e2ff0f6c52dcf452f9dc826c28271fec9bb20a9f4e95b23039e45b40		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE7FB 4692 bytes
font_01_sfnt_off0000f80e.bin
4ea69d2b3cef1da36b7ac7dcc1e3b2647f4dccb804d9e744164c3bfa3936c1f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF80E 10956 bytes

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