Malicious PDF — malware analysis report

Static analysis result for SHA-256 05bd8c8b7e9486c4…

MALICIOUS

PDF

54.7 KB Created: 2020-10-15 16:09:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 0f9750198807cfdbeb4fa7e6a7e14279 SHA-1: ee5dbc92d1dd1ef5d3f3f2dd0f03b748d6e2e57f SHA-256: 05bd8c8b7e9486c40778ffcc6f2b7bed83632f3b1e1219bded2693480d48eeac
162 Risk Score

Malware Insights

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

The PDF file contains a prominent link to 'gettraff.ru' which is flagged as a malicious redirector, and the document body explicitly mentions downloading 'androdumpper for android 4.4.4'. This suggests a phishing or malware distribution attempt. The presence of numerous links to external PDFs, some of which are benign, indicates a link farm strategy to potentially obscure the malicious destination. No scripts were extracted from this sample.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/123?keyword=download+androdumpper+for+android+4.4.4 In PDF document text
    • https://kuwofepex.weebly.com/uploads/1/3/2/7/132740654/riben_gudodow.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/vudodapazepipux_kijemomebegax_velagokotukif.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/vovofofaverun_sawivurovoj_nifawubazox.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366340/normal_5f87e60f5bc73.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366661/normal_5f8758c733381.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370068/normal_5f87fdfaf029c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365660/normal_5f87252592983.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/346e0e79-ba4c-4756-ad86-6b57eae68e50/rofedazusemij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44d75daa-8bc3-42b7-8845-0cc9b1378fd1/sepurevonalume.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb3c6cc7-2c50-46d2-8fd0-b052f3f2d3ca/20269340203.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f79877ec-0f9c-4205-80af-81d18c484af4/gojuped.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4bcf9460-63db-432e-93ff-a4c33bfe700a/27823751119.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92a4fd56-40bd-44a5-b558-460109caf6db/54714078571.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dac77c8f-4941-44de-a8c7-1108fa30ce7c/soduk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97e4747f-a08e-4729-8aab-277d6ce90a79/xezidiguxelosesofufiluv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4903/2607/files/risitomikukekigixo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/2186/9471/files/pimewamudukakimopikaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e81dd36-8f68-4d7e-9658-0faf768c3b5b/59192400597.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df6d9d89-513c-48f3-a709-ebe21f9eb900/75985310401.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_off00008928.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8928 5024 bytes
SHA-256: 3f9c6f2eb8dd2d738ec42d7b0a993e83202ba08fc2f8f5c55de1efa349032035
font_01_sfnt_off00009a38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A38 10676 bytes
SHA-256: 739df8805b35d095ed7efffc9ce3a4149d49ef7b6e8b4828ecbcf50a2909d074
font_02_sfnt_off0000bec5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBEC5 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

Open this report in the interactive analyzer, or submit your own file for analysis.