Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f0b2300bc833520…

MALICIOUS

PDF

81.7 KB Created: 2021-03-29 09:53:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 4a90258db7c3cf8f8e82020f16649b56 SHA-1: 9b4474db5303441cfa9c4c20b45023d01ab68d62 SHA-256: 4f0b2300bc8335204d70128ad43d4bac6030724bb027548ff16f244e4b3c8afa
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one prominent URL pointing to a site offering 'Pixel gun 3d hack'. This suggests a phishing or scam attempt to lure users to a malicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

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 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://zajinet.ru/wix?keyword=pixel+gun+3d+hack+no+human+verification+no+survey+no+offers+2018 PDF link annotation
    • http://fevinoreniwelik.sportsontheweb.net/35086429390.pdfIn PDF document text
    • http://terakusinuw.mypressonline.com/62078694101.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://s3.amazonaws.com/xijuxosisomuna/blade_trinity_full_movie_in_english.pdfIn PDF document text
    • https://s3.amazonaws.com/savukojubusum/89691024281.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a4894af-2b31-4258-b7e3-756f7a723c2d/why_is_acetic_acid_a_weak_electrolyte.pdfIn PDF document text
    • https://1b53f64c-3596-40ff-86ea-95cec8902569.filesusr.com/ugd/838e7e_a21cd734463b431a979f4fd01a35d014.pdf?index=trueIn PDF document text
    • https://0e627107-309b-4451-a84d-e7064c41fccd.filesusr.com/ugd/04c368_9c05c99ae4ed4c23adc2397605648840.pdf?index=trueIn PDF document text
    • https://ee60c613-3dd1-430d-b711-08e3dcbf0273.filesusr.com/ugd/19ce5d_bd5cb548d9cf4355be7b7d29551ecd8b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jimugivos/80580757460.pdfIn PDF document text
    • https://6fd4412c-3e6e-4f21-a9af-8137ffc6c0d9.filesusr.com/ugd/03469c_2fdf3b6c39774b06afd09c7106f40e5c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fajetufekejo/varujivejogiporosinurimin.pdfIn PDF document text
    • http://zipokuxabatu.rf.gd/krav_maga_self_defense_techniques.pdfIn PDF document text
    • https://42190e62-4dca-482d-a077-ae7b222d7779.filesusr.com/ugd/b91392_5486924972bf4dd0abd30a31e11e8fbb.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b6303c4-f815-453b-a092-937c47ae92f9/insinkerator_garbage_disposal_with_cord_badger_5xp_3_4_hp_continuous_feed.pdfIn PDF document text
    • https://s3.amazonaws.com/patotale/xedimufiv.pdfIn PDF document text
    • https://s3.amazonaws.com/sobaketemu/wenebuvolovipilaxewovusel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d42301e4-9795-4bd3-b1cd-d46ee1e32992/crown_xls_2000_used.pdfIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/12570783311.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5bbc310f-5aa7-4be7-8bf1-845ca7b5be08/kapiroto.pdfIn PDF document text
    • http://gowokuvatudo.rf.gd/rilobijisidudiponitapis.pdfIn PDF document text
    • https://s3.amazonaws.com/xujitezu/python_set_union_minus_intersection.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_off0000efc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFC6 6296 bytes
SHA-256: cb1ee59445851c911001da14825419c676da922dc4c92db0f5c3b3f7514280ab
font_01_sfnt_off0001050c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1050C 11068 bytes
SHA-256: 180299a8c9d4996404868b8581d2b6c72857dc543897e182323dbaed0e877096
font_02_sfnt_off00012aa2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AA2 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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