Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d5c19f5439a69cc…

MALICIOUS

PDF

60.8 KB Created: 2020-08-03 22:03:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 686fd721a1e5f024e403a53198f6994e SHA-1: 364ea1a8f65052580ce79627cc43d1b04e8c4d49 SHA-256: 1d5c19f5439a69cc738561417318d8e4e0ee0150a74f6acc15c15b1cd294c1f8
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=absceso+gluteo+tratamiento+antibiotico+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, one of which is 'https://cdn.shopify.com/s/files/1/0440/4133/9030/files/applied_calculus_hughes_hallett_4th_edition.pdf'. The document body appears to be heavily obfuscated or corrupted, but the presence of the malicious redirector URL strongly suggests a phishing or malware delivery attempt.

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.cc/pify?keyword=absceso+gluteo+tratamiento+antibiotico+pdf
    • http://files.bcschooltennis.net/uploads/1/3/0/8/130874012/gitoge_pusoguravu_jakelowujamina_tukejefakuriti.pdf
    • http://kitepan.animaleyeconsultantsd.com/uploads/1/3/1/1/131164243/bisopewujefoxixez.pdf
    • http://files.tinethorup.com/uploads/1/3/1/4/131453539/lamazufes_gesamilugepobo_gorizarebetuw_tinenanol.pdf
    • http://files.annegreenephotography.com/uploads/1/3/1/4/131454012/nawuzejuxifulemi.pdf
    • http://files.oxtedultrasound.com/uploads/1/3/1/4/131408432/c495114b514260.pdf
    • http://files.tinethorup.com/uploads/1/3/1/4/131453539/lamazufes_gesamilugep
    • https://cdn.shopify.com/s/files/1/0440/4133/9030/files/applied_calculus_hughes_hallett_4th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0427/7728/0671/files/get_him_to_the_greek_putlocker.pdf
    • https://cdn.shopify.com/s/files/1/0429/6169/8969/files/dixinevikogewuvas.pdf
    • https://cdn.shopify.com/s/files/1/0430/5272/8474/files/janewetas.pdf
    • https://cdn.shopify.com/s/files/1/0434/1222/6206/files/negukiwinutizisefe.pdf
    • https://cdn.shopify.com/s/files/1/0431/5840/5275/files/83754135430.pdf
    • https://cdn.shopify.com/s/files/1/0429/3571/3958/files/60498354674.pdf
    • https://cdn.shopify.com/s/files/1/0434/6963/5734/files/11556302048.pdf
    • https://cdn.shopify.com/s/files/1/0431/7003/7917/files/97906362733.pdf
    • https://cdn.shopify.com/s/files/1/0430/9703/0805/files/4440321354.pdf
    • https://cdn.shopify.com/s/files/1/0434/1802/6142/files/fivigetaz.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_off00009f51.bin
ede1f28079ae657596c9a7a7f69cd96e1fe72d474d3cb134b6fd0080d9d3ccf0
pdf-font-stream PDF embedded font (sfnt) at offset 0x9F51 5488 bytes
font_01_sfnt_off0000b1d3.bin
369a54d173a0ee205cbaaf8fb96a3a4b088cd2fa966fbdbb9a7c23679e6b7516
pdf-font-stream PDF embedded font (sfnt) at offset 0xB1D3 11068 bytes
font_02_sfnt_off0000d5fc.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0xD5FC 4324 bytes