Malicious PDF — malware analysis report

Static analysis result for SHA-256 98e5cbecbd18d975…

MALICIOUS

PDF

104.9 KB Created: 2021-06-01 16:16:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b2e13216aa1b360c57473787aaeb352e SHA-1: e729b214e0a060ead4d3dc781b31b9b91fc3ec3c SHA-256: 98e5cbecbd18d9757a7926e809cacb67e8ccf41fe6e726d62053a6300f829ee6
116 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a callback-phone (TOAD) lure. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://xajibur.ru/123?utm_term=abacus+alarm+manual PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4470821/normal_5ff982b3ac46a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392659/normal_600cf37e45836.pdfIn PDF document text
    • https://batabokisusixil.weebly.com/uploads/1/3/4/6/134689132/mafoku_saxenejo_nixabufawek_ridojamipu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450876/normal_6004aabd9badf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403531/normal_6038768ba93fd.pdfIn PDF document text
    • https://mepotogi.weebly.com/uploads/1/3/4/7/134737672/5681071.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405459/normal_5fd397db643ec.pdfIn PDF document text
    • https://fizakilugoleji.weebly.com/uploads/1/3/1/4/131438405/bepogituwetonuv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387932/normal_60184c2205def.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417040/normal_5ff517079a595.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445890/normal_5ffcb873305bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401691/normal_6062dcca2569f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422150/normal_5ffb2ff0107f7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465136/normal_5ff2a2999f187.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454977/normal_5fe19e0070ab2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391326/normal_600b5b129c8b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418379/normal_605d3fa4e6138.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://xawaren.pbworks.com/w/file/fetch/144418851/how_to_get_rockstar_activation_code_for_gta_5_pc_free.pdfIn PDF document text
    • http://sajateves.pbworks.com/w/file/fetch/144461850/58603707358.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://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013587.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13587 5072 bytes
SHA-256: eed728e57ffb5d3f0dfc823e8a07dac712af86c79759e9d7e24446334c3e1772
font_01_sfnt_off000146a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x146A8 13260 bytes
SHA-256: fef761f34445ba2f5e75f01e07facf41988c4b1077cad116390ab66bbabe8f13
font_02_sfnt_off00016c0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16C0D 11960 bytes
SHA-256: 59e9bd7b4147c8610871e900328ea93d8220a17c50343950dfd6a1a817c2ae4f

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