Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbcff5f078185499…

MALICIOUS

PDF

53.1 KB Created: 2020-08-18 17:56:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a879817d6b5b34d9764ded189449351b SHA-1: fd8fe052dd1279c0b4b9ef9affee009881651a28 SHA-256: bbcff5f078185499fbccba533228d7e0f70e727c941a4c1cc976de234df4b278
150 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, embedding a large number of external links, many of which are hosted on cdn.shopify.com. Crucially, one of the embedded URLs, https://ttraff.com/pify?keyword=bloody+hell+song, is identified as a malicious redirector. This suggests the document's primary purpose is to lure users to malicious infrastructure, potentially for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=bloody+hell+song
    • http://dasitul.sanctuarypark.com/uploads/1/3/1/6/131607163/mumag.pdf
    • https://cdn.shopify.com/s/files/1/0428/3056/1447/files/how_to_merge_master_into_branch.pdf
    • https://cdn.shopify.com/s/files/1/0436/5336/5910/files/64927299917.pdf
    • https://cdn.shopify.com/s/files/1/0436/0850/6531/files/balirofuzikiriz.pdf
    • https://cdn.shopify.com/s/files/1/0437/9151/5809/files/bootstrap_tabbed_panel.pdf
    • https://cdn.shopify.com/s/files/1/0433/3659/7654/files/buzevarizego.pdf
    • https://cdn.shopify.com/s/files/1/0433/1238/2116/files/duvobixizumubonizeje.pdf
    • https://cdn.shopify.com/s/files/1/0432/2865/9874/files/32505567686.pdf
    • https://cdn.shopify.com/s/files/1/0433/4842/6920/files/75002475598.pdf
    • https://cdn.shopify.com/s/files/1/0432/9845/5705/files/ardex_f5.pdf
    • https://cdn.shopify.com/s/files/1/0429/2172/2015/files/airlift_pump.pdf
    • https://cdn.shopify.com/s/files/1/0433/1234/9334/files/college_biology_textbook_download.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/
    • https://cdn.shopify.com/s/files/1/0433

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007813.bin
b46d945d26f7c05ff4fd726bcf6c3337ca4081efacfa084adc5cec2b3333e007		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7813 4932 bytes
font_01_sfnt_off000088e3.bin
3a2c5660eff8e9dfa16bca4c33b50990be86d17a87373b391c9a2546d8051f61		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88E3 16032 bytes
font_02_sfnt_off0000b9fd.bin
b4e772248c602d950952624a5e2a1bff97b77a4dc0114b573b2037326b5a6741		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB9FD 3024 bytes

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