Malicious PDF — malware analysis report

Static analysis result for SHA-256 d49a71ac2c0941d7…

MALICIOUS

PDF

64.4 KB Created: 2020-08-03 05:19:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 70a298b83f21ad8ff8f631e7e4046bdc SHA-1: ee4b731cd14dcd65f19e5aeb8aea72c6101644cb SHA-256: d49a71ac2c0941d7df9de22e4084a2b0601271b033427e968f359ef446f4aa23
120 Risk Score

Malware Insights

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

The PDF was flagged for containing a large number of external links, with one heuristic specifically identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=probability+pitman+solution', which is also flagged as malicious. This suggests the primary purpose is to redirect users to malicious infrastructure.

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.cc/pify?keyword=probability+pitman+solution
    • http://files.kathrynjeffords.com/uploads/1/3/0/7/130739154/ruzunijapewinagofaje.pdf
    • http://files.abwamdcap.org/uploads/1/3/0/7/130738722/e387f3f2.pdf
    • http://files.alohabaibala.com/uploads/1/3/0/8/130874541/nawogin-towotetino.pdf
    • https://cdn.shopify.com/s/files/1/0430/8752/8103/files/smtpe_time_code.pdf
    • https://cdn.shopify.com/s/files/1/0433/3672/8726/files/58065665107.pdf
    • https://cdn.shopify.com/s/files/1/0443/0397/4556/files/electronics_second_edition_hambley.pdf
    • https://cdn.shopify.com/s/files/1/0432/6942/3269/files/negekudowamup.pdf
    • https://cdn.shopify.com/s/files/1/0435/5381/6728/files/kiwijajetulivenibinunika.pdf
    • https://cdn.shopify.com/s/files/1/0433/3672/8744/files/80782569005.pdf
    • https://cdn.shopify.com/s/files/1/0431/0538/6657/files/24264753990.pdf
    • https://cdn.shopify.com/s/files/1/0435/1619/9066/files/vuxuzululodawis.pdf
    • https://cdn.shopify.com/s/files/1/0434/0760/5923/files/93695051863.pdf
    • https://cdn.shopify.com/s/files/1/0428/8475/9711/files/74173796746.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78394199391.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_off0000b822.bin
da0c97d98699803007e666a81ac40544ebada5ca48064933e71451ae716eb104		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB822 5208 bytes
font_01_sfnt_off0000c9c2.bin
16893d9c4d0236081ba7c928941d12470e3e15bcac87c22a2f9e37f05cca8885		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC9C2 13628 bytes

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