Malicious PDF — malware analysis report

Static analysis result for SHA-256 94cfd7f229a746e3…

MALICIOUS

PDF

83.7 KB Created: 2020-08-09 02:38:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3cfa2683dc7b3861b1fa0248ebe118c9 SHA-1: d287714698ab38cefa1e5b37bf4b3276a9e458ef SHA-256: 94cfd7f229a746e39a30ebcb0e287ae079827cf6dbc54c24e0b53e087d2ddc2b
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a large number of embedded links, many pointing to domains that host PDF files, suggesting a link farm or SEO poisoning tactic. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is used to obscure the final destination. The document body, though heavily obfuscated, contains the URL that leads to this redirector, indicating a social engineering attempt to trick users into visiting malicious infrastructure.

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.com/pify?keyword=speech+writing+examples+for+class+11+pdf
    • http://nopeku.emmanuellezeesman.com/uploads/1/3/1/6/131606490/6083a4e6622d7.pdf
    • http://files.prehistoriccollector.com/uploads/1/3/1/1/131164351/womasijin.pdf
    • http://files.wmualphalambdadelta.org/uploads/1/3/0/8/130814935/7153748.pdf
    • https://cdn.shopify.com/s/files/1/0427/5827/5238/files/vufatimuzozadazezejisu.pdf
    • https://cdn.shopify.com/s/files/1/0432/2770/9597/files/97920046252.pdf
    • https://cdn.shopify.com/s/files/1/0429/0668/1497/files/difference_between_centripetal_and_centrifugal_force.pdf
    • https://cdn.shopify.com/s/files/1/0437/1313/4757/files/fosobas.pdf
    • https://cdn.shopify.com/s/files/1/0446/7389/2515/files/bloodlines_3_richelle_mead.pdf
    • https://cdn.shopify.com/s/files/1/0434/0521/3847/files/petefotetav.pdf
    • https://cdn.shopify.com/s/files/1/0435/4772/1882/files/46326549769.pdf
    • https://cdn.shopify.com/s/files/1/0431/3785/9741/files/apgli_application_form.pdf
    • https://cdn.shopify.com/s/files/1/0431/9730/0885/files/46027585702.pdf
    • https://cdn.shopify.com/s/files/1/0440/3032/8997/files/nabefevevo.pdf
    • https://cdn.shopify.com/s/files/1/0433/2060/6885/files/37760908024.pdf
    • https://cdn.shopify.com/s/files/1/0435/3979/2021/files/42376987139.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_off0000f42e.bin
ead8e943b4968ecd056e2169c0c9ab7bc6f43e39e945c9923060b8762b2960eb
pdf-font-stream PDF embedded font (sfnt) at offset 0xF42E 5884 bytes
font_01_sfnt_off0001082d.bin
bfb83c8bb877b9f5aafd4de1b9c19dc61ec7734ac7687a5a7fad10be6c3c7fc4
pdf-font-stream PDF embedded font (sfnt) at offset 0x1082D 10420 bytes
font_02_sfnt_off00012bf9.bin
6e3fbd491d8b71441998836ddca0d0c102716a221ea14f8143929167ad9a79b3
pdf-font-stream PDF embedded font (sfnt) at offset 0x12BF9 16164 bytes