Malicious PDF — malware analysis report

Static analysis result for SHA-256 6df226ac3a9fbf0f…

MALICIOUS

PDF

88.9 KB Created: 2021-02-28 20:31:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 126cc8c6f6c94b5d284049ab9726edf6 SHA-1: 5c8286cfc8203a8133253370656b3ebedcd6e4e9 SHA-256: 6df226ac3a9fbf0f002f706be6eebe6b8df0769ddebcd6fdc077906b63841eec
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 URL pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though partially obfuscated, suggests a social media lure to encourage clicking the embedded link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://vilenefex.ru/aws?utm_term=como+compartir+una+historia+en+tu+historia PDF link annotation
    • http://sowopezamiw.medianewsonline.com/lejexafenuvopejulaxowig.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495685/normal_5ffc0c081c9a2.pdfIn PDF document text
    • http://laluwaraselolar.mywebcommunity.org/sony_rx100_vi_video_specs.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426269/normal_6017ab9b9a923.pdfIn PDF document text
    • http://lebizifijafaxim.medianewsonline.com/ruxavekutum.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453537/normal_6011e682e0a0e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376103/normal_601c7db4c931d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417983/normal_60030a1417713.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/dudigonifu/android_studio_latest_version_32_bit.pdfIn PDF document text
    • http://vesebebiwimana.epizy.com/wadimefanotaw.pdfIn PDF document text
    • https://s3.amazonaws.com/fekife/lajolapapurujabegoravudup.pdfIn PDF document text
    • https://s3.amazonaws.com/sobaketemu/tijowi.pdfIn PDF document text
    • https://s3.amazonaws.com/sitok/newagi.pdfIn PDF document text
    • https://s3.amazonaws.com/wifiduxezo/what_are_some_controversial_topics_to_write_about.pdfIn PDF document text
    • https://s3.amazonaws.com/fakuguvil/61792006340.pdfIn PDF document text
    • http://fopagozijudiri.epizy.com/43602918571.pdfIn PDF document text
    • https://s3.amazonaws.com/joterige/investigative_report_format_example.pdfIn PDF document text
    • https://s3.amazonaws.com/bubeto/wiziwiwadizuwubukir.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f02d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF02D 5048 bytes
SHA-256: 963a6260f367ff45fdc43cc4c15911a9a2f455e9845efdc442a1d3286b982e46
font_01_sfnt_off00010117.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10117 1800 bytes
SHA-256: 51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0
font_02_sfnt_off000109a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109A5 12060 bytes
SHA-256: 1fa72790435395a30980a9b017d242be16da16a55a278d5b58c8b72987005461
font_03_sfnt_off0001312a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1312A 16312 bytes
SHA-256: bf8f9ece8d9d74ce2d7a98a07ee1bb8f4056faf702b3b1702118181e85f1b939
font_04_sfnt_off000146b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x146B5 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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