Malicious PDF — malware analysis report

Static analysis result for SHA-256 419953190d838e3e…

MALICIOUS

PDF

67.3 KB Created: 2020-12-10 14:19:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: d2f142fb74e1e6f98b1385e219ea2001 SHA-1: 9ab02531aaa40d518c2a6913679cab0c51ea5dc4 SHA-256: 419953190d838e3e0b77edfdfe6b3e932ae5577fc15bab761e340815d40e6959
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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. The embedded URL 'https://trafffi.ru/aws?utm_term=double+bed+sheet+size+nz' is a primary indicator of compromise, likely leading to a phishing site or malware download. Although no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest it's designed to exploit user trust, aligning with spearphishing tactics.

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://trafffi.ru/aws?utm_term=double+bed+sheet+size+nz PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366623/normal_5fbbcb53e4a5b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370275/normal_5f8cbe54864ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456660/normal_5fa4b4ee770b8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454286/normal_5fcc0309573b5.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/bufipevuril/blended_learning.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5b2f2c6229360eccdb2d4/t/5fcaaa8400d6046455a3739e/1607117444558/clan_race_mod_apk_android_1.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc377939955c744b54bcd16/t/5fcd559f1e1a4d7de13b5e01/1607292319608/cricket_bowling_machine_price_in_pakistan.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc13af71c8c7413143404cb/t/5fcb64cd7ab0f364abab6eae/1607165134337/zazebekira.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5104c9698b02c7f3b6a9a/t/5fc91a9b5aa20e6b5305468e/1607015068821/software_data_cable_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/dudurat/mount_sunapee_lift_ticket_specials.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc28998403f5353fda0357a/t/5fc52f15bc819f1cf4804db4/1606758166061/slug_it_out_2_promo_codes_2018.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd075c72f8b574a0f4b605/1606223709598/mulotozemus.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf62eff3de5e49b55c47e4/1606378224370/nagazamutit.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_off0000c9dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9DD 4796 bytes
SHA-256: da126ad54b290d12a66b7be5988be01b886be1dc5c11005bafa681ab87c80964
font_01_sfnt_off0000da32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA32 11004 bytes
SHA-256: 6398057903b3509bc4bf58a7ac7d1a0113394ff2df50eeb9d5bac5c70bf54e2b

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