Malicious PDF — malware analysis report

Static analysis result for SHA-256 efea06638bf2c469…

MALICIOUS

PDF

108.8 KB Created: 2020-08-31 08:32:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76f1df878ae3b4bf9ba390538bbaf5bd SHA-1: 925d571e605bf7192ba13feda6eb81326e7bfd18 SHA-256: efea06638bf2c469970a7e0728e88639d2dc33c140f257a60d56de8bb091eaa0
160 Risk Score

Malware Insights

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

The PDF contains a heuristic indicating it's an advance-fee scam lure, presenting lottery or parcel delivery language. It also contains a malicious redirector link to 'ttraff.cc' and a large number of embedded links, many pointing to Shopify domains, suggesting a link farm for SEO manipulation. The document body, though partially garbled, contains the malicious URL and appears to be disguised as educational material.

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.cc/wix?keyword=ejercicios+espa%2525C3%2525B1ol+sexto+grado
    • https://cdn.shopify.com/s/files/1/0431/4651/0498/files/cengage_maths_jee_mains.pdf
    • https://cdn.shopify.com/s/files/1/0437/2067/1384/files/42786650305.pdf
    • https://cdn.shopify.com/s/files/1/0434/8664/2338/files/velewulekok.pdf
    • https://cdn.shopify.com/s/files/1/0462/6622/0695/files/spent_game_guide.pdf
    • https://cdn.shopify.com/s/files/1/0435/4742/6975/files/80826444661.pdf
    • https://cdn.shopify.com/s/files/1/0439/1705/0008/files/jumoj.pdf
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/34156097891.pdf
    • https://static.usrfiles.com/ugd/d17951_dad066250c4943e2af8235dcfb8c5030.pdf
    • https://static.usrfiles.com/ugd/98e298_d4f3b8a1908b4951b62c01421115938d.pdf
    • https://static.usrfiles.com/ugd/221f3a_8c057d922231482880fac83f29a39505.pdf
    • https://static.usrfiles.com/ugd/e5a943_5ad282af1f8d4ed686aa1ad94e0b748d.pdf
    • https://static.usrfiles.com/ugd/b8c837_e91ff4138f344b0bbd5ffb5a6cf491fe.pdf
    • https://static.usrfiles.com/ugd/9b33c5_56f8241e7391404d88da66e2f95ec3e6.pdf
    • https://static.usrfiles.com/ugd/b8c837_5ee0e4978d2f4d1aa929704d3dc48fbb.pdf
    • https://static.usrfiles.com/ugd/b8c837_1bf73c9469a149e29844297101e16ec4.pdf
    • https://static.usrfiles.com/ugd/4cf28d_25e41faa6d8745bc8908f69f8a155624.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_off0001618c.bin
80ac707a9d23fb76d5139460e530f62169ffabf05a5706c98be450b40289c694
pdf-font-stream PDF embedded font (sfnt) at offset 0x1618C 5552 bytes
font_01_sfnt_off00017441.bin
9e5e9b3b5e51acfe2a1cd6ae051ad51336dd9e633c1d13a724d218ffb1af2528
pdf-font-stream PDF embedded font (sfnt) at offset 0x17441 15788 bytes