Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5dc1ea8dbdd24a0…

MALICIOUS

PDF

46.4 KB Created: 2020-08-14 14:40:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7822b3d669e6e349c0a756bd46617816 SHA-1: 39119210de646bba16ae312f8316c09b2379e2f5 SHA-256: a5dc1ea8dbdd24a0f44f1d93aebef999987c1a60b9db0f7cfb41a939690f73e3
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'ttraff.ru'. The document body, though partially corrupted, contains text related to a BMW Z4 and the URL itself, suggesting a lure to a phishing or scam site. The presence of a large number of external PDF links also indicates a link farm, likely for SEO manipulation or to obscure the final malicious destination.

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=bmw+z4+convertible+top+manual+operation
    • http://files.sisterspiritwomensharingspirituality.org/uploads/1/3/2/8/132815154/58853863.pdf
    • http://kojerugil.thelodgeharrogate.com/uploads/1/3/1/4/131411688/333214a0.pdf
    • http://files.chuckanuttransition.com/uploads/1/3/1/3/131380915/xotel.pdf
    • https://cdn.shopify.com/s/files/1/0429/8607/8369/files/24145078354.pdf
    • https://cdn.shopify.com/s/files/1/0428/7738/6918/files/vagujedegasixiwososoni.pdf
    • https://cdn.shopify.com/s/files/1/0430/7465/0261/files/jonixasetijujoba.pdf
    • https://cdn.shopify.com/s/files/1/0432/0270/7616/files/whitefly_bemisia_tabaci.pdf
    • https://cdn.shopify.com/s/files/1/0441/3505/5512/files/61470445192.pdf
    • https://cdn.shopify.com/s/files/1/0436/7558/2617/files/zubiz.pdf
    • https://cdn.shopify.com/s/files/1/0437/1454/3771/files/vusadiseroripavomi.pdf
    • https://cdn.shopify.com/s/files/1/0428/8721/7319/files/4884651831.pdf
    • https://cdn.shopify.com/s/files/1/0429/4659/2924/files/60836397564.pdf
    • https://cdn.shopify.com/s/files/1/0433/4921/3349/files/winibixikufedakepeti.pdf
    • https://cdn.shopify.com/s/files/1/0434/7022/5574/files/broward_college_south_campus_map.pdf
    • https://cdn.shopify.com/s/files/1/0435/2317/8656/files/gutavax.pdf
    • https://cdn.shopify.com/s/files/1/0450/3538/9086/files/o_abacateiro_bagunceiro.pdf
    • https://cdn.shopify.com/s/files/1/0432/7188/0870/files/powopuneforateja.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_off00006925.bin
6c94bc30c3770e8c15dd4698df9333421393a702963f94597ccf114e9718fd5b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6925 5264 bytes
font_01_sfnt_off00007b04.bin
23badf16d55ffbd1804c54805f2856a109f229ab9f2dd54739f6bf0af1e0b8d5
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B04 10432 bytes
font_02_sfnt_off00009e8d.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x9E8D 4324 bytes