Malicious PDF — malware analysis report

Static analysis result for SHA-256 74fa209b64959454…

MALICIOUS

PDF

64.3 KB Created: 2021-03-04 13:57:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 0037dac404b91d950da7750c4cc8b04b SHA-1: 30cb5d363173cdf148eee0bda8aae42e3823f2fe SHA-256: 74fa209b649594544a6b7cba7743c827724213ceb818059a86c834ed64d04d20
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URL that leads to a domain associated with phishing or malware distribution. The document body, though partially corrupted, suggests a lure related to a vehicle inspection form, consistent with phishing tactics.

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://jacksth.ru/wb?keyword=formato%20inspeccion%20de%20vehiculos%20sura PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4389586/normal_6034ef3d23d12.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471095/normal_6008b878c82a0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503033/normal_5fffef0193b16.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418746/normal_6008873aac3eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456369/normal_5fd39e006f545.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403804/normal_5fe95095d4df9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428039/normal_5fdb5fc8d4f73.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404975/normal_6004f3e534920.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bokofapig/8517774434.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5792a7a7-e204-4981-9080-fb242f9c1645/does_wendys_have_50_piece_nuggets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc4e08ee-6e02-4ee8-9298-1321bdd79f8e/political_philosophy_questions.pdfIn PDF document text
    • https://s3.amazonaws.com/nevovumowa/easy_halloween_word_search.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/878d1d24-9ce8-4178-844c-29f5ed30e4d7/the_wind_in_the_willows_1983_watch_online.pdfIn PDF document text
    • http://donijexufenu.onlinewebshop.net/pofirufesisane.pdfIn PDF document text
    • https://s3.amazonaws.com/regegozumekoza/227421076.pdfIn PDF document text
    • https://s3.amazonaws.com/bifamomove/marvel_future_fight_guide_tier_2.pdfIn PDF document text
    • https://s3.amazonaws.com/mubefula/top_100_acoustic_guitar_songs_tabs.pdfIn PDF document text
    • https://s3.amazonaws.com/xenavuxa/moduj.pdfIn PDF document text
    • http://kubomefewofumim.atwebpages.com/xigiwotorigajilonipu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd775360-435d-45b8-8068-9c352a470ee2/minn_kota_ultrex_trolling_motor_prop.pdfIn PDF document text
    • https://s3.amazonaws.com/xowasosuf/holy_bible_english_version_free.pdfIn PDF document text
    • https://s3.amazonaws.com/nawuvud/wotonagoronajugifu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/310e2810-8cc1-47d7-958e-dd3e094b3dc6/zivuxitase.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c3a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3A1 5328 bytes
SHA-256: 668cfdbae5061ba08664f7254da9120e79e2798a5526157550c5cac92bf1f5fb
font_01_sfnt_off0000d595.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD595 8808 bytes
SHA-256: 2d137549fad8c20ea800cdca6bc6c892571e899145ebaa5aafc550bf95d757bd

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