Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a924e41b81cc0bd…

MALICIOUS

PDF

53.7 KB Created: 2020-08-19 15:50:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54fc603266539537e4c66022cc0cf831 SHA-1: 67f887a32573c0d784cb3289f047dd337afa2a14 SHA-256: 7a924e41b81cc0bdcc63b60092f6f85b9bdabe689f7bc7a0468f2b7da008d28e
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=drug+abuse+in+uganda+2017+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The file also exhibits characteristics of a PDF SEO link farm, with numerous embedded links, many hosted on cdn.shopify.com, likely to obscure the malicious redirector. 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.ru/pify?keyword=drug+abuse+in+uganda+2017+pdf
    • http://files.sulongtheatre.com/uploads/1/3/0/7/130776567/7840367.pdf
    • http://files.gamersontheedge.com/uploads/1/3/2/8/132814272/3429765.pdf
    • http://files.narrinspiceandsauce.com/uploads/1/3/1/4/131437276/9ceec2.pdf
    • http://files.pacificplaycompany.com/uploads/1/3/0/8/130814535/kukakuga.pdf
    • https://cdn.shopify.com/s/files/1/0429/4246/4163/files/37474987751.pdf
    • https://cdn.shopify.com/s/files/1/0439/9208/8734/files/fepevipibufezofegar.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nojigepinipefonumupitos.pdf
    • https://cdn.shopify.com/s/files/1/0433/9050/1020/files/30333442898.pdf
    • https://cdn.shopify.com/s/files/1/0432/1142/3902/files/24753112409.pdf
    • https://cdn.shopify.com/s/files/1/0439/4962/1406/files/vocabulary_lists_by_topic.pdf
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/55631165352.pdf
    • https://cdn.shopify.com/s/files/1/0429/3158/5180/files/25929821284.pdf
    • https://cdn.shopify.com/s/files/1/0434/5243/2537/files/applications_of_cluster_computing.pdf
    • https://cdn.shopify.com/s/files/1/0433/5720/8731/files/precipitates_and_solubility_rules_lab_31_answers.pdf
    • https://cdn.shopify.com/s/files/1/0437/8607/6309/files/43564268847.pdf
    • https://cdn.shopify.com/s/files/1/0431/3550/0439/files/pomepadogolebagazupan.pdf
    • https://cdn.shopify.com/s/files/1/0432/3698/2944/files/4115798586.pdf
    • https://cdn.shopify.com/s/files/1/0431/0650/0769/files/amari_information_geometry.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000850d.bin
6d07034c760d7b48fa672541207fdd80c458774a3adf9405fe01ca38b7096179
pdf-font-stream PDF embedded font (sfnt) at offset 0x850D 5412 bytes
font_01_sfnt_off00009781.bin
dfc25920e721fa7355b3d1df6b5e48dfc108fab5144411a1ee04d1f520e23ece
pdf-font-stream PDF embedded font (sfnt) at offset 0x9781 10632 bytes
font_02_sfnt_off0000bbc7.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0xBBC7 4324 bytes