Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc9ba79851b4dd70…

MALICIOUS

PDF

69.8 KB Created: 2021-02-15 23:41:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: b1166b03d86f46bfbe3d7b06b0030658 SHA-1: a339f59418ac6c787bbb269c69e0b049f22aa6b6 SHA-256: bc9ba79851b4dd703e8dfeffb2f5d8248fc85ebe6314b41a374ac1f8561c327d
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, one of which is `https://maypoin.ru/wix?keyword=wifislax+apk+para+pc`, suggesting a lure to download software. While no scripts were explicitly extracted, the presence of external URLs and the nature of the detection indicate a phishing or malware distribution attempt.

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://maypoin.ru/wix?keyword=wifislax+apk+para+pc PDF link annotation
    • https://cdn.sqhk.co/takodabu/PDgjALQ/6011391054.pdfIn PDF document text
    • https://cdn.sqhk.co/tatudawo/icjglgc/92750655078.pdfIn PDF document text
    • https://cdn.sqhk.co/ratosakip/id1EqiG/falling_down_the_mountain_lyrics.pdfIn PDF document text
    • https://cdn.sqhk.co/libavesonon/dINidc0/36686177729.pdfIn PDF document text
    • https://cdn.sqhk.co/kimefutif/gdjdhbk/33842431643.pdfIn PDF document text
    • http://s7hmus.org/english_story_books_free_downloadm9idl.pdfIn PDF document text
    • https://cdn.sqhk.co/xudekutof/ggcwVDs/rokobiruwewi.pdfIn PDF document text
    • http://fitoxis.22web.org/56560018060.pdfIn PDF document text
    • https://cdn.sqhk.co/jimumakevaji/ejffnVd/egg_inc_game_tips.pdfIn PDF document text
    • http://fapumew.22web.org/free_blank_invoice_template_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/runenuti/azjdsie/best_buy_apple_watch_series_6_nike.pdfIn PDF document text
    • http://raftgjgr.space/xunepovagaza700u8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xepalufozakot.epizy.com/78048284835.pdfIn PDF document text
    • https://s3.amazonaws.com/wuvepilamamuse/28737264829.pdfIn PDF document text
    • https://s3.amazonaws.com/kiguteperilodu/atmosfx_ghostly_apparitions.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_off0000d5ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5CA 5152 bytes
SHA-256: 5671796aaa7616d6723f819876a051f6da8455a11df998202c7e406ce352462c
font_01_sfnt_off0000e77d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE77D 10368 bytes
SHA-256: e39ab0a7adb4520c369fc8286bbfb868116e03bae6b3ed298e6c605609ddd36d