Malicious PDF — malware analysis report

Static analysis result for SHA-256 8af157841fd7b280…

MALICIOUS

PDF

76.2 KB Created: 2021-03-09 12:40:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: be341d93c5f8ad8f9cb8fc7097c541ac SHA-1: 47389c12bd4b89f007b6863eca7d4ce63782b3cc SHA-256: 8af157841fd7b280f04869e4c69ba98384aa5f8303cbc500e7fa9216915c93b2
96 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, with one specifically mentioning 'award' and 'download', suggesting a phishing or social engineering lure. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the presence of numerous external URLs points to the document's role in directing users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ponafet.ru/award?keyword=aadhaar+card+pdf+print+software+download
    • http://7lessons.site/hamilton_beach_flexbrew_leaking_water_from_bottomj9oj4.pdf
    • http://sputnews.com/klipsch_r-10b_remote_not_working13vwz.pdf
    • https://wisapemewe.weebly.com/uploads/1/3/4/7/134713478/zalesonagex.pdf
    • http://tb-films.ru/79449456294n2v3t.pdf
    • http://imedo.ru/le_petit_nicolas_englishdc19q.pdf
    • http://wejowadizabudex.mypressonline.com/argumentative_essay_examples_ap_lang.pdf
    • http://reawolt.online/polaris_magnum_425_oil_capacityubyb9.pdf
    • https://loxojewumiv.weebly.com/uploads/1/3/4/6/134651611/miguzuru.pdf
    • https://cdn.sqhk.co/fujotojaxob/jchcUib/nerolaginozawomezex.pdf
    • https://zutujoxiker.weebly.com/uploads/1/3/0/7/130776667/kukepisa.pdf
    • http://meinekarten.best/acer_aspire_e15_battery_removalvmztn.pdf
    • http://rufawefojag.sportsontheweb.net/fatebevon.pdf
    • https://sugelama.weebly.com/uploads/1/3/4/8/134898925/benopifuranibof.pdf
    • https://fekodajitor.weebly.com/uploads/1/3/0/8/130874258/cdc2ae224f0a.pdf
    • http://constructionhouse.info/heroclix_team_abilities_2018uib1b.pdf
    • http://tafugegajotu.mygamesonline.org/how_to_yoga_breathing_exercises.pdf
    • https://cdn.sqhk.co/lixozimiz/ichageC/kexikizowawewifavuzogo.pdf
    • http://rajukilodagoje.mygamesonline.org/is_marshall_good.pdf
    • https://cdn.sqhk.co/lamimegisu/ojhMbTu/79469869936.pdf
    • http://tonemisi.medianewsonline.com/what_is_the_conditioned_response_in_little_albert.pdf
    • http://tupaxeguna.scienceontheweb.net/how_to_cite_someones_quote_in_an_essay.pdf
    • https://cdn.sqhk.co/zasokolof/Yhdgfgj/american_captain_patrius_font_free.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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_off0000edff.bin
42bf7f2f0368ac86e1a8a1c709a99c26a5818e0bb17fc0b070ee432c710a140f
pdf-font-stream PDF embedded font (sfnt) at offset 0xEDFF 5324 bytes
font_01_sfnt_off0001002a.bin
3a899c7388eed0ef50788003bb60c7f9d998a02df4c33a7d84b06aae09a96156
pdf-font-stream PDF embedded font (sfnt) at offset 0x1002A 10196 bytes