Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0f70671014d1b95…

MALICIOUS

PDF

40.4 KB Created: 2020-10-31 12:32:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 4c2c8390f1d61d4025d3a24d59021441 SHA-1: bb5ca2a14ea0a82c21ae2f2d5942afa915261d5f SHA-256: c0f70671014d1b95cab6cdc36f4ea076a35db013140779407be7d2a200b0de9d
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/aws?keyword=symbol+ls2208+serial+driver'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a malicious URL within the document body indicates an attempt to lure the user to a potentially harmful site, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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://gettraff.ru/aws?keyword=symbol+ls2208+serial+driver In PDF document text
    • https://cdn-cms.f-static.net/uploads/4381102/normal_5f9abc7b81365.pdfIn PDF document text
    • https://pepisukuwen.weebly.com/uploads/1/3/1/6/131606293/wadupobufalajo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372399/normal_5f9d01334b256.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373301/normal_5f94840c30afd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/8e03bbca-2238-4dd1-8bb8-bf74a85804cf/wazurapomubin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/364bead7-63c3-4c9a-8782-81ecdbc76206/dakexosenirokepipigi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3cd70cd-1f2e-4c98-8b12-29869cd014aa/wunakukafedejefazi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/519a1093-f514-4d70-a90d-ceda930b567d/mafefexisoti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ea0f28b-cea7-4dfa-9cab-5bda03e6295e/17452862453.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee6a5aa7-91dc-416b-b4a3-e9cb7ade45d8/65580774774.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F88 5448 bytes
SHA-256: 60c7c1309cec839ab9b62a23b22b46f728ce026ad404daa312ee53ce1870ce30
font_01_sfnt_off000061fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61FC 10776 bytes
SHA-256: 2906e959a8158a07443fd308cbb976fdc14fab3567fdbe20987171bab8336e15
font_02_sfnt_off000086af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86AF 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176