Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7b881c336503b3a…

MALICIOUS

PDF

43.6 KB Created: 2020-08-14 16:08:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 77c2d8766064160b0a1687a07489e19d SHA-1: eac6c94def436a0f3b90f223e5f89559d3352dec SHA-256: f7b881c336503b3affa82d677115fc69fb24475de0dd442accaa62dcc603a6a6
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 Shopify domains, but one critical link directs to a known malicious redirector. This suggests a link farm or SEO poisoning tactic designed to drive traffic to malicious infrastructure. The document body contains garbled text but includes the target URL, reinforcing the malicious intent. 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://ttraff.ru/pify?keyword=ssf2+online+guide
    • http://files.phsquakercorner.com/uploads/1/3/1/4/131406437/xedosogopazufi-leromivaxo-lubolovubek-bivomokesudo.pdf
    • http://files.jumpsindoorbounce.com/uploads/1/3/1/8/131857791/pefupuwimexanokiz.pdf
    • http://files.sgionet.com/uploads/1/3/0/8/130874413/zujojunejiguwimurob.pdf
    • http://files.pulsewidth.com/uploads/1/3/1/3/131383549/2116477.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/62879071067.pdf
    • https://cdn.shopify.com/s/files/1/0431/1682/2692/files/pozis.pdf
    • https://cdn.shopify.com/s/files/1/0432/9222/9797/files/60185027527.pdf
    • https://cdn.shopify.com/s/files/1/0432/2469/4942/files/mary_balogh_descargar.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81667611697.pdf
    • https://cdn.shopify.com/s/files/1/0431/6381/1999/files/erickson_christian_theology_part_2.pdf
    • https://cdn.shopify.com/s/files/1/0432/8977/2187/files/87947228600.pdf
    • https://cdn.shopify.com/s/files/1/0429/8217/8979/files/while_guthix_sleeps.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pisanebemewamabojesodid.pdf
    • https://cdn.shopify.com/s/files/1/0432/5883/9198/files/2174373215.pdf
    • https://cdn.shopify.com/s/files/1/0432/8990/3259/files/52459881395.pdf
    • https://cdn.shopify.com/s/files/1/0440/2118/6718/files/library_administration_and_management.pdf
    • https://cdn.shopify.com/s/files/1/0434/5331/7272/files/adaptive_reuse_of_industrial_buildings.pdf
    • https://cdn.shopify.com/s/files/1/0434/4433/8838/files/885413461.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_off00006d69.bin
bbce98597ff1b80d51d823e3f9c3c5f16ea15bfb3004fc918793d1c5939022da
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D69 5004 bytes
font_01_sfnt_off00007e82.bin
dd8f04ef82340f5d50c3c1b4899b471abe2a65f72d4be526c77b10a5dc949649
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E82 10316 bytes