Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f1f3c5709fd43af…

MALICIOUS

PDF

56.4 KB Created: 2020-08-02 19:34:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a1d8ff937868760a52ee141357ac004 SHA-1: 12f844f990fab44f29329348a97802586d4eacdb SHA-256: 1f1f3c5709fd43af6689e1b149b9391379e2dc2053aae9a975e73e652a93f0bc
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, a technique often used for SEO spam or to direct users to malicious sites. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/wb?keyword=vehicle%20blackbox%20dvr%20full%20hd%201080p%20manual'. The document body also contains this URL and numerous other links hosted on Shopify, suggesting a link farm designed to manipulate search engine results or distribute malware. No scripts were extracted from this sample.

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/wb?keyword=vehicle%20blackbox%20dvr%20full%20hd%201080p%20manual
    • http://files.2peter24.com/uploads/1/3/1/3/131379761/vudukuzakaz_rakuku.pdf
    • http://files.southcoastbeachproject.org/uploads/1/3/1/3/131381078/vobol_buletefak_xoxululelo_xepusumepobozoz.pdf
    • http://files.delaneype.com/uploads/1/3/1/0/131070938/vomisatinenasuj.pdf
    • http://files.tammystillwaterdogs.com/uploads/1/3/1/4/131407102/b075d7aeb.pdf
    • http://files.1000cancerstories.com/uploads/1/3/1/3/131378990/ff756.pdf
    • https://cdn.shopify.com/s/files/1/0433/6589/2261/files/nademidovalelaxabake.pdf
    • https://cdn.shopify.com/s/files/1/0428/5209/0022/files/pepupaferuse.pdf
    • https://cdn.shopify.com/s/files/1/0430/8402/1921/files/64194387010.pdf
    • https://cdn.shopify.com/s/files/1/0435/8547/0623/files/racing_champions_price_guide.pdf
    • https://cdn.shopify.com/s/files/1/0438/4541/9173/files/birufum.pdf
    • https://cdn.shopify.com/s/files/1/0433/3800/6686/files/vawojezixekilomelimum.pdf
    • https://cdn.shopify.com/s/files/1/0430/6763/7917/files/ropiwitakomawedela.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31184917419.pdf
    • https://cdn.shopify.com/s/files/1/0429/7677/2250/files/sole_f63_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/6100/9829/files/toguduwuguvavisixugo.pdf
    • https://cdn.shopify.com/s/files/1/0428/2620/3302/files/20789142416.pdf
    • https://cdn.shopify.com/s/files/1/0431/3877/7249/files/43735848093.pdf
    • https://cdn.shopify.com/s/files/1/0430/6560/6301/files/logojojipexenotofofuzagi.pdf
    • https://cdn.shopify.com/s/files/1/0434/9516/2022/files/suwamefod.pdf
    • https://cdn.shopify.com/s/files/1/0438/5135/0166/files/41220283151.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_off00006ff1.bin
eaaa80f29b999766df912ea2be5bbb9d08ab2fdadd8334b8470eff021c12082e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FF1 9384 bytes
font_01_sfnt_off00008f07.bin
154b787c0d7bcf88397edc855cc58c540b82a3bef7f218acaf1513c0baaccea6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F07 5904 bytes
font_02_sfnt_off0000a305.bin
2870578fe5536c1947d113cd078b8c55cc9e8a31631ab7245f795f295f379e6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA305 15660 bytes

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