Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ba0c0d39e900922…

MALICIOUS

PDF

40.4 KB Created: 2020-11-04 22:55:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fb7dc76420e8e27880de214f311f2aa6 SHA-1: 9bcbf96f09483a6071ad90ebcf565da83216295e SHA-256: 7ba0c0d39e90092292bb494093f505fd7c55d2d9c6334cc7c73f2c5c5f095756
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body and heuristics indicate a lure for an advance-fee scam, likely intended to trick users into clicking malicious links for financial gain. No scripts were extracted, but the primary attack vector is the distribution of malicious links.

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • 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://ggtraff.ru/strik?keyword=marshalls+creek+fire+co
    • https://fanunidepaz.weebly.com/uploads/1/3/4/4/134474969/bopitodifemu-pumekaduga-puwirumasuduv-kofawenasak.pdf
    • https://toxoxazagole.weebly.com/uploads/1/3/0/9/130969938/fevowurodeg.pdf
    • https://cdn-cms.f-static.net/uploads/4369503/normal_5f9f6c890d308.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/27d19ded-c66c-4969-b7f3-364ac758702c/sezigowujulerigisuk.pdf
    • https://s3.amazonaws.com/nademopor/jiwevojakogim.pdf
    • https://uploads.strikinglycdn.com/files/c22e6b60-303a-4068-9fc9-fde96ed2907b/everytime_boy_pablo.pdf
    • https://uploads.strikinglycdn.com/files/12d12d7d-afc5-40ed-a007-82da4ffe9562/41681611738.pdf
    • https://s3.amazonaws.com/miwolezedubujoz/32880722471.pdf
    • https://uploads.strikinglycdn.com/files/fabcffb4-5848-43d4-8a4f-6bd587a8209a/fission_reactor_minecraft.pdf
    • https://uploads.strikinglycdn.com/files/ba698486-34c2-4cb1-a18b-e3097a79e9e0/jadafanud.pdf
    • https://uploads.strikinglycdn.com/files/a5cdd570-c95a-4544-8b34-b8029b66566d/piazzolla_histoire_du_tango.pdf
    • https://uploads.strikinglycdn.com/files/e417127f-c697-4e47-b106-fdb84470542d/kevin_siembieda_wikipedia.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000051cc.bin
d95b8206f61221bd1cc41d32f42362bbd37dbbd1ad7f254f802a7b0773a31eb5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51CC 4640 bytes
font_01_sfnt_off00006198.bin
7c3d97cb9d07198beb475c68f838458a5090fa749aec22547a6652b23c022965		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6198 10988 bytes
font_02_sfnt_off0000870f.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x870F 4324 bytes

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