Malicious PDF — malware analysis report

Static analysis result for SHA-256 567bb27b7f8f9250…

MALICIOUS

PDF

42.8 KB Created: 2020-08-09 17:38:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 26a00b6712ba84be6de257db5e3f0a36 SHA-1: 91db3c9ac675bced8160116c89a0231fb10d9b3e SHA-256: 567bb27b7f8f92508c30f5b56fbb6f8ea7b64e3bada5f981fb6b44cf801ab491
130 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 a redirector service (ttraff.com) that is known to host malicious content. The document body, though heavily obfuscated, also contains URLs that appear to be part of a link farm strategy, likely intended to lure users into downloading further malicious payloads or visiting phishing sites. The presence of a critical PDF_MALICIOUS_REDIRECTOR_LINK heuristic firing strongly supports this assessment.

Heuristics 4

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=aines+farmacologia+veterinaria+pdf
    • http://files.objectsofdesireuk.com/uploads/1/3/1/8/131871614/jovewozisiduw_pofejewuruvipub_bexekaz.pdf
    • http://files.4-ucorp.com/uploads/1/3/0/7/130739308/soviriga_mutexakukelasup.pdf
    • http://files.dinhhoaitram.com/uploads/1/3/2/7/132740361/5218793.pdf
    • http://files.lotusloveonline.com/uploads/1/3/1/6/131637081/9127048.pdf
    • http://files.tarotartist.net/uploads/1/3/2/6/132681938/8280551.pdf
    • https://cdn.shopify.com/s/files/1/0433/4610/0374/files/socioeconomic_status_and_health.pdf
    • https://cdn.shopify.com/s/files/1/0433/8368/5270/files/sovifofogo.pdf
    • https://cdn.shopify.com/s/files/1/0435/8835/4207/files/63800412854.pdf
    • https://cdn.shopify.com/s/files/1/0438/9991/2344/files/beta_ossidazione_acidi_grassi.pdf
    • https://cdn.shopify.com/s/files/1/0434/2389/1621/files/cancioneros_romanticos_para_guitarra.pdf
    • https://cdn.shopify.com/s/files/1/0431/0571/4338/files/ruponido.pdf
    • https://cdn.shopify.com/s/files/1/0434/1910/7480/files/58669918536.pdf
    • https://cdn.shopify.com/s/files/1/0434/6255/7856/files/vulipojajijewibuvumomozu.pdf
    • https://cdn.shopify.com/s/files/1/0430/5967/5293/files/galovenosopi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9665/4489/files/bienes_muebles_e_inmuebles_peru.pdf
    • https://cdn.shopify.com/s/files/1/0428/6713/0534/files/falanokumufipo.pdf
    • https://cdn.shopify.com/s/files/1/0433/4210/2679/files/i_love_to_ppt.pdf
    • https://cdn.shopify.com/s/files/1/0437/6618/6135/files/catecismo_westminster.pdf
    • https://cdn.shopify.com/s/files/1/0433/4610/0374/files/dadivugaferolek.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_off000068b2.bin
d8d4a40b9ae30be6a941a7a04adcc0153d5cacebad6ee3e972e26c5f8fe39312
pdf-font-stream PDF embedded font (sfnt) at offset 0x68B2 5524 bytes
font_01_sfnt_off00007b6f.bin
dc10ecf93eacacb8ce0cc1426fd415e321b6ebe81753b23f45854069ce663a6b
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B6F 9976 bytes