Malicious PDF — malware analysis report

Static analysis result for SHA-256 f05304a7cf9a563e…

MALICIOUS

PDF

40.2 KB Created: 2020-08-14 10:30:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 528cb6f00efe04f28bd95afda9c26718 SHA-1: 03912cb75147cd37ca583f036497388637763a9a SHA-256: f05304a7cf9a563ec3b604b5565fa3d712df2f660088249ccb7ef5dd47f4e137
120 Risk Score

Malware Insights

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

The PDF document contains a significant number of embedded links, with a critical heuristic identifying it as a PDF link farm. One of these links, https://ttraff.cc/pify?keyword=d%2526+d+5e+grave+cleric+guide, is flagged as a malicious redirector. The document body itself is heavily obfuscated but contains references to this malicious URL, suggesting the primary purpose is to redirect users to malicious content. 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.cc/pify?keyword=d%2526+d+5e+grave+cleric+guide
    • http://files.withstylecalne.com/uploads/1/3/2/8/132814400/junevugoxuvezugufeg.pdf
    • http://files.zhiguohe.com/uploads/1/3/1/3/131383384/4301951.pdf
    • http://files.jps-page.com/uploads/1/3/0/7/130739369/dipomakezakovu_gadomemogusasem_janafexozunir.pdf
    • http://files.psmk.ca/uploads/1/3/0/8/130814057/3d5a7f662a5.pdf
    • http://jowuni.grovecreekfarm.org/uploads/1/3/1/4/131453384/bajusabesasob.pdf
    • https://cdn.shopify.com/s/files/1/0435/9671/0050/files/splash_screen_image_not_showing_android.pdf
    • https://cdn.shopify.com/s/files/1/0437/2532/4439/files/capr_39-_3.pdf
    • https://cdn.shopify.com/s/files/1/0430/5852/8405/files/veni_creator_spiritus_ocp.pdf
    • https://cdn.shopify.com/s/files/1/0432/2515/3698/files/monster_manual_5.pdf
    • https://cdn.shopify.com/s/files/1/0430/2995/4721/files/gavavisivinivoripowas.pdf
    • https://cdn.shopify.com/s/files/1/0428/7728/8611/files/34867001037.pdf
    • https://cdn.shopify.com/s/files/1/0436/2492/3298/files/bikofedenemetureravi.pdf
    • https://cdn.shopify.com/s/files/1/0435/3468/0216/files/lemapofanusilasit.pdf
    • https://cdn.shopify.com/s/files/1/0433/1870/6341/files/43737961202.pdf
    • https://cdn.shopify.com/s/files/1/0428/0313/4627/files/12093297587.pdf
    • https://cdn.shopify.com/s/files/1/0439/9936/3222/files/nowoje.pdf
    • https://cdn.shopify.com/s/files/1/0438/0455/7472/files/pijujexexotopuw.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_off000063a6.bin
588f521cfd4f94b822f1b06fc45d750a2892d21422664c4a04289674f6411020		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63A6 4156 bytes
font_01_sfnt_off000071d0.bin
e7174f34f7b490e4c079ef44e1094e2951f26b253c621c648a632c540fbae757		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71D0 10316 bytes

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