Malicious PDF — malware analysis report

Static analysis result for SHA-256 de208c77fc59fc72…

MALICIOUS

PDF

66.9 KB Created: 2021-02-17 16:49:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 66f57308d00dc8af97d04eb2b03fb585 SHA-1: 322cebec7141e74bbc86ae2c258fb5c0f3934c7a SHA-256: de208c77fc59fc72ad088c73fb0de85b0f2f8853d506eccd81424c2bfde285ee
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a URL that mimics a search result, likely intended to trick the user into downloading further malware. No scripts were extracted, but the presence of external URIs and the ML/ClamAV detections strongly indicate a phishing or downloader attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/wix?keyword=secrets+of+the+talking+jaguar+pdf PDF link annotation
    • http://boldly-grow.com/es_4000_manualxrfgx.pdfIn PDF document text
    • https://cdn.sqhk.co/nujekezitifi/usRghgh/7_seas_ballz_deep_ipa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451556/normal_5fccf4f965b06.pdfIn PDF document text
    • http://xxlmature.site/when_marnie_was_theredemxf.pdfIn PDF document text
    • http://smirno.life/xukakavotusurisisujiru12c1v.pdfIn PDF document text
    • https://cdn.sqhk.co/gorokipo/eTjbic7/tumblr_downloader_for_mac.pdfIn PDF document text
    • http://aov.one/402173423146kmp8.pdfIn PDF document text
    • http://my-credit.info/concrete_abstract_and_collective_nouns_worksheetkf1x9.pdfIn PDF document text
    • https://cdn.sqhk.co/lilomovetum/dXcBFib/pico_iyer_ted_talk_ping_pong.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/liguwubore/apptoko_hack_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/divelatoxa/newatexanolip.pdfIn PDF document text
    • https://s3.amazonaws.com/wutogugej/car_bill_of_sale_template_california.pdfIn PDF document text
    • https://s3.amazonaws.com/rilexazejuzovep/voreteji.pdfIn PDF document text
    • http://sukasorepej.rf.gd/mulomafejafode.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_off0000c948.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC948 5660 bytes
SHA-256: d51529c96dc1213ceed5abe5f7f31e5ce186f1ec38c4a1174a84c90d77d624db
font_01_sfnt_off0000dc8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC8C 10068 bytes
SHA-256: adec9e6d8fb631552de172d95a216540cfbd698a3a6aa3e9f6e3d99e9f35a6ff

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