Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c26d3afb9de7b5c…

MALICIOUS

PDF

62.7 KB Created: 2020-08-14 21:39:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63a2590b05f179e8cafc70fb1f40ad6b SHA-1: d2b2eb04927d8e634d7efbc3a53b088577c2f349 SHA-256: 8c26d3afb9de7b5c7438e952b54caf39c1e5b661dd1eec58c0e4dbeebca41745
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains numerous embedded links, with a critical heuristic firing for a malicious redirector at 'https://ttraff.com/wb?keyword=experience%20letter%20for%20civil%20engineer%20pdf'. Another critical heuristic indicates a PDF link farm, with the first URL pointing to 'https://cdn.shopify.com/s/files/1/0437/9069/6597/files/fallout_1_download.pdf'. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/wb?keyword=experience%20letter%20for%20civil%20engineer%20pdf', suggesting a lure to trick users into clicking malicious links.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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/wb?keyword=experience%20letter%20for%20civil%20engineer%20pdf
    • http://velakad.supportingpresence.com.au/uploads/1/3/2/6/132695569/fumarodaxosumal-jugezanujig-zoberu-rulapagezep.pdf
    • http://fesiki.worksummercamp.com/uploads/1/3/0/9/130969551/mivubopimigagomi.pdf
    • http://files.mydadnmom.com/uploads/1/3/1/6/131606011/topatojule-sutuniti-wodipatakij-gojuriretatum.pdf
    • http://files.samaritancreations.org/uploads/1/3/1/3/131381464/380579298.pdf
    • https://cdn.shopify.com/s/files/1/0437/9069/6597/files/fallout_1_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/9160/7190/files/83685378344.pdf
    • https://cdn.shopify.com/s/files/1/0436/8000/6294/files/27493739425.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69440205977.pdf
    • https://cdn.shopify.com/s/files/1/0429/8627/4967/files/nofotojesozawawusamo.pdf
    • https://cdn.shopify.com/s/files/1/0431/3186/3202/files/bexegakilisasexotew.pdf
    • https://cdn.shopify.com/s/files/1/0430/5669/3397/files/fekanevijuva.pdf
    • https://cdn.shopify.com/s/files/1/0430/7045/5957/files/vidabatuzateburenu.pdf
    • https://cdn.shopify.com/s/files/1/0427/6604/1244/files/39405472599.pdf
    • https://cdn.shopify.com/s/files/1/0438/5007/2224/files/xitevakumalogomozuku.pdf
    • https://cdn.shopify.com/s/files/1/0438/6645/6224/files/77796875538.pdf
    • https://cdn.shopify.com/s/files/1/0429/5357/2515/files/muwajotisoselasud.pdf
    • https://cdn.shopify.com/s/files/1/0437/1654/2632/files/78642700619.pdf
    • https://cdn.shopify.com/s/files/1/0428/0100/4707/files/bronze_horseman.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/
    • https://cdn.shopify.com/s/files/1/0436/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000af6c.bin
85b692c1c636aed9ab1240d2a7361179fdd6c0849396a06064984f922e967b4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAF6C 2828 bytes
font_01_sfnt_off0000b966.bin
793bee599a47ac81ee5c57cf16bfd8aff30c96d05ec229b37462e4a93c385bcb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB966 5020 bytes
font_02_sfnt_off0000ca92.bin
8feb974054b4c2264e67b04992c2a05600fb4c5cf6e681c84e2f0f4798373c34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCA92 10060 bytes

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