Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b0c20ac5810d2c7…

MALICIOUS

PDF

48.9 KB Created: 2020-08-11 14:57:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92f0f280263064ec3995c6e28ab890fa SHA-1: 48893f11e13fcb1ebcdf427cad8438033efb8ed4 SHA-256: 1b0c20ac5810d2c730d3978e3936958ad6af6514a537cab4e51047b2d3b83873
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links redirects to a known malicious domain (ttraff.ru). The document body contains garbled text but also includes the malicious URL, suggesting it's a lure to trick users into clicking the link. The primary attack pattern involves redirecting users to malicious infrastructure via a link farm.

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=glioblastoma+multiforme+pediatria+pdf
    • http://files.rebeccaattia.com/uploads/1/3/1/1/131164027/db8979e.pdf
    • http://sivebar.felixjarrarmusic.com/uploads/1/3/0/9/130969742/ninevelule.pdf
    • http://files.buzz4bugs.com/uploads/1/3/0/8/130874658/6669e9a0ee9fe.pdf
    • http://files.littlerabbitryontheprairie.com/uploads/1/3/1/3/131379295/29d1a4f9.pdf
    • https://cdn.shopify.com/s/files/1/0432/9324/5590/files/83168590698.pdf
    • https://cdn.shopify.com/s/files/1/0431/0545/2193/files/39705726030.pdf
    • https://cdn.shopify.com/s/files/1/0434/1940/2405/files/categorias_del_materialismo_dialectico.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45251784546.pdf
    • https://cdn.shopify.com/s/files/1/0429/7015/3113/files/loderixuxixefedegeroso.pdf
    • https://cdn.shopify.com/s/files/1/0434/7451/8180/files/hydraulic_accumulator_nptel.pdf
    • https://cdn.shopify.com/s/files/1/0436/2492/3298/files/reliability_centered_maintenance_second_edition_john_moubray.pdf
    • https://cdn.shopify.com/s/files/1/0431/5008/2202/files/nujurexofejagesawapikog.pdf
    • https://cdn.shopify.com/s/files/1/0429/2804/6233/files/39778706374.pdf
    • https://cdn.shopify.com/s/files/1/0430/4742/0066/files/kaxijogimamepadidipi.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/44587285321.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_off00007478.bin
c57dea96b14cf5ed731ac1c10411843b7ad741d36155965eb0100db1be53e352
pdf-font-stream PDF embedded font (sfnt) at offset 0x7478 5132 bytes
font_01_sfnt_off000085eb.bin
01e499692fe5f6528d10b63f89a4fb2030972db3af7623417d217e2c30313913
pdf-font-stream PDF embedded font (sfnt) at offset 0x85EB 10060 bytes
font_02_sfnt_off0000a870.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0xA870 4324 bytes