Malicious PDF — malware analysis report

Static analysis result for SHA-256 a72a7dd60bf500cb…

MALICIOUS

PDF

50.6 KB Created: 2020-08-10 04:41:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8b8ae05435ab2a70c32ceb9d070ad46a SHA-1: c52dfe484916cd1f492fe7cfeaf81b3c453d16e7 SHA-256: a72a7dd60bf500cb88a7ea0d6bd835eb616b02509f6607b9a38503f57e169229
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=basel+committee+operational+risk+pdf'. This URL is part of a link farm designed to lure users into clicking on seemingly legitimate PDF documents. The document body itself contains garbled text but includes the same suspicious URL and several other URLs hosted on Shopify and other domains, some of which are also flagged as unknown or potentially malicious. The primary attack vector appears to be social engineering via a deceptive link within the document.

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=basel+committee+operational+risk+pdf
    • http://files.tidaleffectscapecod.com/uploads/1/3/1/3/131379409/tizebufogimosexewun.pdf
    • http://nonelimi.livinghopefwc.com/uploads/1/3/2/8/132814930/norodubevokojowa.pdf
    • http://files.gilfordgotlunch.com/uploads/1/3/2/6/132681513/0d31e607c67.pdf
    • https://cdn.shopify.com/s/files/1/0431/1931/3053/files/83443622409.pdf
    • https://cdn.shopify.com/s/files/1/0437/6798/8376/files/wajuxadebaxo.pdf
    • https://cdn.shopify.com/s/files/1/0429/1965/7628/files/jilugododofidibosarowaxi.pdf
    • https://cdn.shopify.com/s/files/1/0435/2330/9727/files/systme_d_alimentation_en_carburant_essence.pdf
    • https://cdn.shopify.com/s/files/1/0436/1479/7981/files/les_adjectifs_demonstratifs_exercices.pdf
    • https://cdn.shopify.com/s/files/1/0431/7547/7405/files/58026244143.pdf
    • https://cdn.shopify.com/s/files/1/0435/0436/9816/files/xixibukasewaseruxowiwagev.pdf
    • https://cdn.shopify.com/s/files/1/0429/5242/5631/files/selenium_automation_testing_tutorial_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0433/6877/5841/files/fijodeririboba.pdf
    • https://cdn.shopify.com/s/files/1/0430/0079/1191/files/40759085519.pdf
    • https://cdn.shopify.com/s/files/1/0433/8266/9464/files/44930665365.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_off000072a0.bin
8ec3d9815fdb3e462b00911ded3c7982b0283cd68d35badcfa69cd5b9a0ab04f
pdf-font-stream PDF embedded font (sfnt) at offset 0x72A0 5416 bytes
font_01_sfnt_off000084f6.bin
6378ac6f06ba376eab06425b72705563937d3b5564f02e87caf505a0c4ae99fe
pdf-font-stream PDF embedded font (sfnt) at offset 0x84F6 10432 bytes
font_02_sfnt_off0000a88c.bin
52db30b66cfb76898988bc7c6ed152514c301740808ab95bec9c68e49df23550
pdf-font-stream PDF embedded font (sfnt) at offset 0xA88C 16036 bytes