Malicious PDF — malware analysis report

Static analysis result for SHA-256 27bdf745c530de45…

MALICIOUS

PDF

41.8 KB Created: 2020-08-03 06:09:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 79d832c3043006ab2b2b8f3d79b7987f SHA-1: e2a21adafc3d0b1bb0d944575df5e90b607ff45d SHA-256: 27bdf745c530de45cacac93e5ea26d03d9706537e9532421ae5c605cd3ad9ea4
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=dvir+form+pdf'. This URL is likely used to redirect the user to a malicious site. The document also contains a large number of embedded external PDF links, a common tactic for SEO poisoning or distributing 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.com/pify?keyword=dvir+form+pdf
    • http://files.aatgwa.com/uploads/1/3/0/9/130969525/6676c91e.pdf
    • http://files.jimstamperjewelry.com/uploads/1/3/0/7/130739024/269a8c2d34.pdf
    • http://files.atec-amt.org/uploads/1/3/0/7/130740142/8638571.pdf
    • http://varoturam.mountainparkevents.com/uploads/1/3/1/4/131409090/cfe20be.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/taselalodomojobuda.pdf
    • https://cdn.shopify.com/s/files/1/0440/1430/5430/files/23982403366.pdf
    • https://cdn.shopify.com/s/files/1/0440/1764/7766/files/fundamentals_of_microbiology_10th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0429/1140/0102/files/gejukuzotafugep.pdf
    • https://cdn.shopify.com/s/files/1/0434/2140/1237/files/12577483543.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/safuginogatujato.pdf
    • https://cdn.shopify.com/s/files/1/0433/0684/4315/files/dosiniselu.pdf
    • https://cdn.shopify.com/s/files/1/0430/3287/1074/files/ranuwidegosupejizukevogu.pdf
    • https://cdn.shopify.com/s/files/1/0433/5288/3352/files/ruby_string_to_boolean.pdf
    • https://cdn.shopify.com/s/files/1/0428/8207/2732/files/69442089234.pdf
    • https://cdn.shopify.com/s/files/1/0434/1334/0312/files/37807133285.pdf
    • https://cdn.shopify.com/s/files/1/0431/2920/8983/files/98571532442.pdf
    • https://cdn.shopify.com/s/files/1/0432/9160/7190/files/pivokosudedetanoliruvazi.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_off00006713.bin
cb06a02ddf901f053eecb8efa19ff7d0bf35984f0b0f8df6edb812f51a249aec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6713 4828 bytes
font_01_sfnt_off00007777.bin
fdabb389bbbfb165a71f1d930cf421600d6fd8516d0f8ed5be4b2a8468d136b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7777 10292 bytes

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