Malicious PDF — malware analysis report

Static analysis result for SHA-256 ada9f55cc80372d8…

MALICIOUS

PDF

58.0 KB Created: 2020-08-19 02:52:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51dcf7d6915946bccb4fcc22f27a6a79 SHA-1: b380d7235af47be3afb14bbcd825eb6a958b12aa SHA-256: ada9f55cc80372d896f997956ab8a4c8ac2369d0d4d9ba846030e674bf8931c9
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=churrasqueira+eletrica+arke+manual'. This URL is likely used to redirect users to a malicious site. The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. No scripts were extracted, and the family is unknown due to the lack of further indicators.

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=churrasqueira+eletrica+arke+manual
    • http://files.biogeographyresearchlab.net/uploads/1/3/1/8/131856146/teroropenifosupux.pdf
    • http://files.lux4light.com/uploads/1/3/1/4/131407369/wivujejisig.pdf
    • http://nutexexo.boxelderfoodpantry.org/uploads/1/3/0/7/130740480/4983837.pdf
    • http://xovuke.bigbearboardshop.com/uploads/1/3/0/9/130969744/zomoro-pagax-pikekasoxetarim.pdf
    • http://xofewek.positiveperspectivesonaging.com/uploads/1/3/1/3/131383791/f61c6102750.pdf
    • https://cdn.shopify.com/s/files/1/0434/1648/6040/files/tasitukelasoxo.pdf
    • https://cdn.shopify.com/s/files/1/0440/5392/1957/files/86132009150.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/28603075132.pdf
    • https://cdn.shopify.com/s/files/1/0435/6079/6318/files/after_the_love_has_gone_lead_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3750/files/34208628760.pdf
    • https://cdn.shopify.com/s/files/1/0430/4571/6129/files/tiwapugexujibemikizoxo.pdf
    • https://cdn.shopify.com/s/files/1/0428/8158/1209/files/wasisugarogajifapajigexu.pdf
    • https://cdn.shopify.com/s/files/1/0433/4731/2789/files/adobe_reader_for_windows_10_64_bit_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/3359/8880/files/tewezexizapivepu.pdf
    • https://cdn.shopify.com/s/files/1/0432/5687/3128/files/23525288126.pdf
    • https://cdn.shopify.com/s/files/1/0430/4027/6642/files/63407360405.pdf
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/adverbs_of_manner_time_and_place_worksheets.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_off00009ef8.bin
ab3bacbc46132545fd0861d603961bb7caa41bfbd78b46756a62ff45d44dc75b
pdf-font-stream PDF embedded font (sfnt) at offset 0x9EF8 5136 bytes
font_01_sfnt_off0000b047.bin
24e41749d926d3d3895ec35e1f156ec750426062a45671e8751dc8c7e171ce70
pdf-font-stream PDF embedded font (sfnt) at offset 0xB047 13248 bytes