Malicious PDF — malware analysis report

Static analysis result for SHA-256 c70eff7631230f80…

MALICIOUS

PDF

41.1 KB Created: 2020-09-29 18:32:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9547db7c80cf619a68257e522a5bae34 SHA-1: 5f486206eb51f14136681b34658b85376160b6dd SHA-256: c70eff7631230f80bdc7353416f4bcbdc97c515e8ffb2b30d66489567f63e383
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to domains associated with link farms or redirectors. One critical heuristic identified a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that matches the heuristic finding, suggesting a lure for users searching for specific content. No scripts were extracted from this sample.

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.
  • 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.
  • 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/strik?keyword=carol+of+the+bells+sheet+music+pdf+e+minor
    • http://gemak.mathewvieira.com/uploads/1/3/0/7/130776760/1246767.pdf
    • http://digebo.runningwithspiritbabies.com/uploads/1/3/1/3/131380183/vulaweferotaboxajar.pdf
    • http://nogutalez.biostatsgen.com/uploads/1/3/2/8/132815176/joxibine.pdf
    • http://files.shanereidcontracting.com/uploads/1/3/1/0/131069763/tezatuvevik.pdf
    • http://visuxuliz.youshouldvisitjapan.com/uploads/1/3/1/4/131454057/1845343.pdf
    • http://files.12chemistry.com/uploads/1/3/0/7/130739143/novutejizikojekuv.pdf
    • http://mimivizo.drwilliammunro.com.au/uploads/1/3/1/3/131384552/2c59f.pdf
    • http://files.harbourstreetjazz.com/uploads/1/3/1/3/131380495/sufopo.pdf
    • http://putili.knemeth.com/uploads/1/3/1/3/131384552/e5c627.pdf
    • https://uploads.strikinglycdn.com/files/c075d12a-a14d-472f-a905-df1e64a947e2/jeluralobevigegogalaj.pdf
    • https://uploads.strikinglycdn.com/files/950ba1b2-cdd9-4436-b5e9-76835ecbb59e/33792102549.pdf
    • https://uploads.strikinglycdn.com/files/0d56dd29-205f-49bf-b545-2837f4d0a334/78386428978.pdf
    • https://uploads.strikinglycdn.com/files/aa660577-7e93-44c1-9ea0-2536c7d53832/69896450572.pdf
    • https://uploads.strikinglycdn.com/files/11389ef6-48f5-486e-b021-d68dc6f9d4a2/13475937024.pdf
    • https://uploads.strikinglycdn.com/files/85a4fd93-afb9-4cb4-baf5-61cca99b584f/11778311015.pdf
    • https://uploads.strikinglycdn.com/files/7c4e6256-c6a0-40ef-b635-47684048d5c4/27748254558.pdf
    • https://uploads.strikinglycdn.com/files/c755c913-170d-4880-86e4-b9159239c132/ponoximulemojusiv.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000051d7.bin
82abafcc589e5a5c67d010bf7fb2e2c7d15678c4bacf7107df0b8341efdb3f63
pdf-font-stream PDF embedded font (sfnt) at offset 0x51D7 5440 bytes
font_01_sfnt_off0000642d.bin
561dac131a8f52760ec9aaebb5ac83bdefae55d7069aa6f24a12b5bcc1219f2c
pdf-font-stream PDF embedded font (sfnt) at offset 0x642D 10308 bytes
font_02_sfnt_off00008776.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x8776 4324 bytes