Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf0380bf2a31e3ad…

MALICIOUS

PDF

45.1 KB Created: 2020-08-07 03:07:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 833741f3a619e5fcea520ee3c2242a8e SHA-1: fd4f701c793da54d450a138a097e445920117523 SHA-256: bf0380bf2a31e3add15d720d8d2141e5a231251d45f05962438fd1e429b997d2
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 Shopify domains, but one critical link redirects to a known malicious redirector. The document body, though heavily obfuscated, contains a reference to the same malicious URL. This suggests a link-farming or redirection attack designed to lead users to malicious content.

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=cambridge+primary+english+stage+6+pdf
    • http://files.stamfordfootball.com/uploads/1/3/0/8/130813526/xuwav.pdf
    • http://files.mymedicinemama.com/uploads/1/3/2/8/132814958/femogajizelajes.pdf
    • http://files.sagebrushaviation.org/uploads/1/3/1/4/131483217/8d216.pdf
    • http://rivibod.dontmesswithcalifornia.com/uploads/1/3/1/3/131378780/dorobekenib-xizopuve-nenonobawoju-leditomurimoziz.pdf
    • https://cdn.shopify.com/s/files/1/0431/0161/8327/files/inverter_welding_machine_circuit.pdf
    • https://cdn.shopify.com/s/files/1/0429/2270/5063/files/blood_on_the_river.pdf
    • https://cdn.shopify.com/s/files/1/0439/3032/1051/files/anestesia_general_farmacologia.pdf
    • https://cdn.shopify.com/s/files/1/0431/2642/3701/files/xemix.pdf
    • https://cdn.shopify.com/s/files/1/0436/9865/1288/files/97541544370.pdf
    • https://cdn.shopify.com/s/files/1/0430/2707/1127/files/zivumugi.pdf
    • https://cdn.shopify.com/s/files/1/0431/0623/8626/files/58157783682.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61066914906.pdf
    • https://cdn.shopify.com/s/files/1/0437/2591/4262/files/cerebral_palsy_physical_therapy_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0437/8542/0949/files/88425957690.pdf
    • https://cdn.shopify.com/s/files/1/0428/6133/0598/files/hp_compaq_elite_8300_sff_drivers.pdf
    • https://cdn.shopify.com/s/files/1/0431/6764/5852/files/lipeduvubipivolerofa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9455/7351/files/annuity_example_problems.pdf
    • https://cdn.shopify.com/s/files/1/0433/7647/6311/files/pipabizamopulisus.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_off00006327.bin
f67f047d3d7045d0d29865a7cc1229ff2390d3acdad4b28f70040009eb165111
pdf-font-stream PDF embedded font (sfnt) at offset 0x6327 5552 bytes
font_01_sfnt_off000075de.bin
0f83632e0d6b8dae2b5b82e563af3cbc6c4b90f46e81fa069a0f20f03cda05db
pdf-font-stream PDF embedded font (sfnt) at offset 0x75DE 10304 bytes
font_02_sfnt_off0000990d.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x990D 4324 bytes