Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fd838c96d66e149…

MALICIOUS

PDF

34.3 KB Created: 2020-08-26 02:58:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ec021948f51e171829f668dcc04cc30 SHA-1: 30e9b4ae870cba0dc78f40f023c7e9755f423ee2 SHA-256: 9fd838c96d66e149b5297554c3ce67cec57346f47c03d6e9729f20325fa32a6d
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which is further supported by the presence of numerous embedded URLs, many pointing to Shopify. The primary malicious URL, https://ttraff.cc/pify?keyword=fichier+svg+gratuit+pour+silhouette, is likely used to redirect users to a malicious site. The document body, though heavily obfuscated, contains the same lure text and URLs, indicating a social engineering attempt to trick users into clicking the malicious link.

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=fichier+svg+gratuit+pour+silhouette
    • http://files.aquazircon.com/uploads/1/3/2/6/132680990/f877514862.pdf
    • http://files.jongliddonauthor.com/uploads/1/3/0/9/130969265/zojinupalowusejamuf.pdf
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/62966863649.pdf
    • https://cdn.shopify.com/s/files/1/0440/8036/5720/files/epson_adjustment_program_free_full_version.pdf
    • https://cdn.shopify.com/s/files/1/0434/6816/1184/files/nonemovuvogevipaf.pdf
    • https://cdn.shopify.com/s/files/1/0428/1463/6198/files/sadulikininigeraji.pdf
    • https://cdn.shopify.com/s/files/1/0432/3311/6315/files/scorched_earth_2018_full_movie.pdf
    • https://cdn.shopify.com/s/files/1/0437/4793/4359/files/tuvupononerodiwimoxirej.pdf
    • https://cdn.shopify.com/s/files/1/0434/7209/3336/files/89052383906.pdf
    • https://cdn.shopify.com/s/files/1/0433/0396/0731/files/29005003922.pdf
    • https://cdn.shopify.com/s/files/1/0440/4386/2181/files/tedigedezevoxojakabu.pdf
    • https://cdn.shopify.com/s/files/1/0435/1826/3464/files/14762954007.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/949986333.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_off0000455b.bin
11c8d62bd682e67d25466cf1d22ebc54f617a913ff93bcffcbd083b432af520c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x455B 5208 bytes
font_01_sfnt_off00005712.bin
9839d32458cf562c844ffe04bf5651ab2eb2459aafec086e54e25f2d570eea49		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5712 11048 bytes

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