Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0f3f4a622d96684…

MALICIOUS

PDF

88.7 KB Created: 2021-03-31 13:31:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: e4068d39a21242749c0385f762b8d862 SHA-1: 26ce804b2a9210f744d148bdb8eeeed87fd5e841 SHA-256: c0f3f4a622d96684d1f6a87125114d4f31ad52f5162e276388d05b772cf583f6
126 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and ML classifiers indicate a high probability of maliciousness. It contains numerous embedded URLs, many pointing to disposable or suspicious domains, suggesting a phishing or link-farming scheme. The document body, though heavily obfuscated, contains metadata related to 'Tracfone alcatel onetouch a206g manual' and 'wkhtmltopdf', which may be part of a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://golowaki.ru/wix?keyword=tracfone+alcatel+onetouch+a206g+manual PDF link annotation
    • http://pidikugojan.22web.org/baby_girl_names_starting_with_m_unique_with_meaning.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414501/normal_603c5bef9e90a.pdfIn PDF document text
    • http://gogejevi.iblogger.org/vimorexitik.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369317/normal_5fc931109ad8f.pdfIn PDF document text
    • http://tojokepolosuku.iblogger.org/87716848271.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402745/normal_603aa575eb073.pdfIn PDF document text
    • https://vojizozovogimum.weebly.com/uploads/1/3/0/7/130740342/59fc9af30.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479223/normal_604f84f6e7e57.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417528/normal_602026ef27419.pdfIn PDF document text
    • https://ronupajowosoza.weebly.com/uploads/1/3/4/8/134871490/2459571.pdfIn PDF document text
    • http://bavunexebiri.iblogger.org/a_travs_de_mi_ventana_descargar.pdfIn PDF document text
    • https://kekufakaxuw.weebly.com/uploads/1/3/2/7/132740700/4605543.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503578/normal_602be8e1ac68a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413590/normal_60321f00324fb.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In 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/e6aac4ba-49d6-4672-848a-5ab9d0476eaa/an_early_meal_a_viking_age_cookbook_and_culinary_odyssey.pdfIn PDF document text
    • http://gofeneneju.rf.gd/88607466047.pdfIn PDF document text
    • http://fiwipofel.epizy.com/vemugavedepuzalerevixu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/619434cc-6b63-4ff5-94ba-ec553ed8cbbd/54141075775.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1f4d393-e1f4-4a5c-acec-17c0c539bf66/baby_g_shock_white_watch.pdfIn PDF document text
    • http://xuwanozofugis.epizy.com/nagoje.pdfIn PDF document text
    • http://xovogig.epizy.com/new_bollywood_movie_2018_free_hd.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010455.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10455 2200 bytes
SHA-256: e6163aa2dbb43e61fa6d2e3fbf96e5fd762718f093f4c5e34f92f4080a616693
font_01_sfnt_off00010e46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E46 5328 bytes
SHA-256: 03da11cdaab56397d5cc2bd6d61bd6b4660363066f4c661151aafb6a6fb7dbb2
font_02_sfnt_off00012032.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12032 11284 bytes
SHA-256: 12ffb263089ecc3501adf2317ac7f2bc1cec241dcf57c15fda3092f31147a1c6
font_03_sfnt_off000146d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x146D9 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e