Malicious PDF — malware analysis report

Static analysis result for SHA-256 975e68ba7695d0e6…

MALICIOUS

PDF

46.9 KB Created: 2020-10-17 01:42:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d309b3e5067c90a52cfb59d6f7dc1ac SHA-1: d15f6054ebdfbfcaa5fa7574e59559c4abc2472a SHA-256: 975e68ba7695d0e6219006572eac06e1d628fb53b36d701f5785f7d1b667b53e
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to a redirector service. The document body, though heavily obfuscated, contains text related to 'diagramming sentences' and includes the malicious URL. This suggests a social engineering attempt to trick users into visiting a malicious site, likely for further exploitation or credential harvesting.

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://ttraff.club/123?keyword=diagramming+sentences+practice+pdf
    • https://cdn-cms.f-static.net/uploads/4365606/normal_5f89ef7c1c433.pdf
    • https://cdn-cms.f-static.net/uploads/4371788/normal_5f8962a0ab7e8.pdf
    • https://cdn-cms.f-static.net/uploads/4366357/normal_5f87554be0694.pdf
    • https://namunobuwuper.weebly.com/uploads/1/3/0/7/130776476/0ee2a12c79f8dbd.pdf
    • https://cdn-cms.f-static.net/uploads/4373508/normal_5f8a164437def.pdf
    • https://cdn-cms.f-static.net/uploads/4366969/normal_5f87a0f4531c4.pdf
    • https://cdn-cms.f-static.net/uploads/4373522/normal_5f8a14df03caf.pdf
    • https://cdn-cms.f-static.net/uploads/4374857/normal_5f8a0bfad59b9.pdf
    • https://cdn-cms.f-static.net/uploads/4367947/normal_5f876f398f52b.pdf
    • https://cdn-cms.f-static.net/uploads/4366017/normal_5f89fdf2f1d7d.pdf
    • https://cdn-cms.f-static.net/uploads/4372377/normal_5f8a213058b65.pdf
    • https://cdn-cms.f-static.net/uploads/4370529/normal_5f8a102268e12.pdf
    • https://cdn-cms.f-static.net/uploads/4365642/normal_5f8996203bdf6.pdf
    • https://uploads.strikinglycdn.com/files/7ac81f9e-52c8-4808-bcec-9b6b1e51b018/27792111985.pdf
    • https://uploads.strikinglycdn.com/files/0a03670d-ea34-470d-9cdd-6ddb6c58b38c/95316496307.pdf
    • https://uploads.strikinglycdn.com/files/f7a7029a-bcf6-4bf9-a8c3-fa5b681545f4/kizenaxarewe.pdf
    • https://uploads.strikinglycdn.com/files/a55b86a1-eda3-4f81-862b-1a3bc6a21362/67466554127.pdf
    • https://cdn.shopify.com/s/files/1/0482/4891/4081/files/brandeis_class_schedule.pdf
    • https://cdn.shopify.com/s/files/1/0486/4075/3822/files/last_hurricane_in_dc.pdf
    • https://cdn.shopify.com/s/files/1/0428/8829/8662/files/renal_diet_list.pdf
    • https://cdn.shopify.com/s/files/1/0437/5642/1278/files/adblock_plus_for_android_apk_free_download.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000078ee.bin
ec268759dd3ad86ad0969097ea6e0e26442fd1eb752e102afaf592be9dcbe657
pdf-font-stream PDF embedded font (sfnt) at offset 0x78EE 5440 bytes
font_01_sfnt_off00008b59.bin
8efbeb3f121e3b5a81d0e42a08bb4653ae1b104ab4774372b14b905e781dd7d4
pdf-font-stream PDF embedded font (sfnt) at offset 0x8B59 10128 bytes