Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dbddab902b76ba3…

MALICIOUS

PDF

44.7 KB Created: 2020-09-19 13:41:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d01bdfa0103d88c688e70cc96700616 SHA-1: 41e5087b60e79cb7f548b6bafad4371b1aa86bc6 SHA-256: 0dbddab902b76ba316ff274a2274db5486b8e9f5473a90521a21268fa7c74856
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links, one of which points to a known malicious redirector. The document body, though heavily obfuscated, contains text related to tires and the malicious URL, suggesting a lure. The presence of numerous other PDF links further indicates a link farm or redirection scheme designed to lead the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.club/wix?keyword=trail+guide+tires+285%252F70r17
    • http://files.bluebridgelifescience.com/uploads/1/3/2/7/132712415/buzikilutepakuse.pdf
    • http://mufituzi.mantra-translate.org/uploads/1/3/1/8/131856584/150f9e67f1.pdf
    • http://files.jeffcofiretraining.org/uploads/1/3/2/6/132681409/4110604.pdf
    • http://files.jacquelinesalvador.com/uploads/1/3/2/7/132740471/eb935764.pdf
    • http://files.millerandmiller.org/uploads/1/3/1/3/131398555/lemobid.pdf
    • http://files.mariapalmerart.com/uploads/1/3/1/4/131453990/nulezeze-rapuwekama-rifepodigu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://989bf053-e2b3-48f1-87be-e15cafc74e82.filesusr.com/ugd/79e0dc_c1d1e754a3aa4953bbe96f8e6976f084.pdf?index=true
    • https://5d42b773-d076-496e-815a-9d13fd584256.filesusr.com/ugd/82e28d_8e44132a6f464c18a57d72945603db37.pdf?index=true
    • https://4a2dbd66-c7d3-4cd1-b2ac-b0fddae4ea95.filesusr.com/ugd/a0d21a_510bf72ed98d4c0eb172774e38c16641.pdf?index=true
    • https://b4875a3c-0e54-40d7-89f3-ccd92164c934.filesusr.com/ugd/724fb5_3950d532a98c4b64932e17f35d2f4ef6.pdf?index=true
    • https://6a2ccd4e-ee6f-408c-9f5f-e6c6ed907797.filesusr.com/ugd/2994dd_838ca419daad43d5a3c31cc031c3b6b9.pdf?index=true
    • https://70882235-3ffc-4231-b652-40714ec534ad.filesusr.com/ugd/81d6a4_012f6bf1c8f54a8cbea0623c3ca91f5e.pdf?index=true
    • https://3a931a49-060b-471d-b6ea-462490c5b59d.filesusr.com/ugd/374ce0_aed995600fd043d5b52810673d2d158d.pdf?index=true
    • https://7996ebda-d3a4-422e-96b1-eda377ec5cf3.filesusr.com/ugd/2ddd39_2dced644b3ee47f0ab615ffd47d3f2ca.pdf?index=true
    • https://ccc07c21-81d7-41af-8fa0-28a314f523c7.filesusr.com/ugd/9bd82e_8e35f0c8bd114d9cb4418ceb7c07285d.pdf?index=true
    • 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_off00006e32.bin
2841a90e5ce65314db2511178e9dff9f739ccee5cb3692d8bae79627ce79117f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E32 5700 bytes
font_01_sfnt_off000081b9.bin
0f17c9b1d7d80473e13eb22f1c0afa302250c2cfb1f29435f502876afc532453		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81B9 10584 bytes

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