Malicious PDF — malware analysis report

Static analysis result for SHA-256 15501ced853c9d72…

MALICIOUS

PDF

184.9 KB Created: 2020-08-01 01:37:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dbcc7beda9136c532b1293a0a163efe7 SHA-1: ecf4682374a1d6db4d806ecf574362ffec27cd45 SHA-256: 15501ced853c9d7234bcec150c6676c98dfdf74f4097724fc3227b5ab081ef44
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1204.002 Malicious Link

The PDF contains heuristics indicating an advance-fee scam lure and a malicious redirector link. The document body, though heavily obfuscated, contains the URL that is also flagged by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. This suggests the primary goal is to redirect the user to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://ttraff.cc/pify?keyword=5e+ring+of+warmth
    • http://files.washington-scottish.com/uploads/1/3/1/4/131406739/1511360.pdf
    • http://files.alldogobedience.com/uploads/1/3/2/6/132696111/c0cef.pdf
    • http://files.the-regular.com/uploads/1/3/0/8/130814169/gepobejoxav.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/8245/7000/files/gusaxibozagoseribep.pdf
    • https://cdn.shopify.com/s/files/1/0429/8991/2218/files/ignatavicius_8th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0431/5712/7336/files/gilat.pdf
    • https://cdn.shopify.com/s/files/1/0427/9874/3719/files/mokanativelabonaze.pdf
    • https://cdn.shopify.com/s/files/1/0430/3152/7575/files/nadapusemed.pdf
    • https://cdn.shopify.com/s/files/1/0433/0727/0297/files/76871145215.pdf
    • https://cdn.shopify.com/s/files/1/0434/4024/2840/files/koxanokewegonex.pdf
    • https://cdn.shopify.com/s/files/1/0428/2331/9715/files/bimujuwimodulopufupin.pdf
    • https://cdn.shopify.com/s/files/1/0438/5406/9925/files/vixumosenom.pdf
    • https://cdn.shopify.com/s/files/1/0435/0866/2440/files/53328998992.pdf
    • https://cdn.shopify.com/s/files/1/0429/6704/0154/files/discord_bot_scripts.pdf
    • https://cdn.shopify.com/s/files/1/0433/9456/4250/files/nebulitu.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002973a.bin
72ae4fcd6b7e959512e7072501b1a31952f5802df8717aaea3e6a12d40a9f9a6
pdf-font-stream PDF embedded font (sfnt) at offset 0x2973A 5092 bytes
font_01_sfnt_off0002a878.bin
7301ae743435c2aa5a3aee63db058f45e8ee9b4e89b35fba394a2a527e5d673a
pdf-font-stream PDF embedded font (sfnt) at offset 0x2A878 14240 bytes