Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2bbeac96aea58d3…

MALICIOUS

PDF

79.3 KB Created: 2021-04-25 22:15:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 2b2fa1344b53ccec469850e67fb3fce6 SHA-1: 4dc8453777759b3b5fcf5655a9d2e9d8b01d712a SHA-256: b2bbeac96aea58d3d4e12a993ab6eb466f539b3b7c4cfb8048ae031d3438012b
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to seemingly random PDF files, indicating a link farm or SEO spamming operation. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and numerous external URIs are indicative of an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://pelibifir.ru/strik?utm_term=will+a+dometic+thermostat+work+with+a+coleman+ac PDF link annotation
    • http://gimanobidetage.iblogger.org/32825952040.pdfIn PDF document text
    • http://tefozunamosolo.iblogger.org/38103064824.pdfIn PDF document text
    • http://zaneralisobiwi.22web.org/bavinck_reformed_dogmatics.pdfIn PDF document text
    • https://rowafitiw.weebly.com/uploads/1/3/4/6/134608100/ludinexar.pdfIn PDF document text
    • https://lumovomudin.weebly.com/uploads/1/3/4/7/134704265/fikulazoraxuzujan.pdfIn PDF document text
    • https://warevinigipa.weebly.com/uploads/1/3/4/8/134898994/6cb2ac6a301b.pdfIn PDF document text
    • http://dazomasuw.22web.org/editable_cv_templates_free_uk.pdfIn PDF document text
    • http://jotijitod.66ghz.com/flight_sim_game_app_android.pdfIn PDF document text
    • https://tenuwikenosex.weebly.com/uploads/1/3/6/0/136082269/wepoxod.pdfIn PDF document text
    • https://dupomogorudo.weebly.com/uploads/1/3/4/5/134595760/6915c2.pdfIn PDF document text
    • https://fajesafopumusid.weebly.com/uploads/1/3/1/8/131871419/kuvajulanasig.pdfIn PDF document text
    • https://bilagezapa.weebly.com/uploads/1/3/1/1/131163658/pevab-lanoneroseluv.pdfIn PDF document text
    • https://tegotaxuwore.weebly.com/uploads/1/3/2/7/132712324/4676730.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://s3.amazonaws.com/pipaneku/beatles_come_together_bass.pdfIn PDF document text
    • https://s3.amazonaws.com/fadedosi/iti_admission_form_delhi_2019.pdfIn PDF document text
    • http://ginubav.epizy.com/threatened_abortion.pdfIn PDF document text
    • https://s3.amazonaws.com/naxozelozude/how_to_descale_keurig_k400_series.pdfIn PDF document text
    • https://s3.amazonaws.com/kozewuposoridil/64878679439.pdfIn PDF document text
    • https://s3.amazonaws.com/purufiz/vejovipiwemusuwar.pdfIn PDF document text
    • https://s3.amazonaws.com/xoxaneral/analytical_cleaning_method_validation_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/fajujiju/fowuredabagezovino.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e79a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE79A 5348 bytes
SHA-256: 0ad4b0c11e4488d8bd089d9190b034032d93dcbc4279990db767ef3be1047ba9
font_01_sfnt_off0000f9a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9A9 6068 bytes
SHA-256: 1f79b081fe245cf9181f2e6ad484d5de3f355e0828dbe7aa1c14a68e096e11b6
font_02_sfnt_off00010959.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10959 11044 bytes
SHA-256: 689885126cee1980e3158a05e9da4a665ab2f57ea632bb3731547428d20bbea1

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