Malicious PDF — malware analysis report

Static analysis result for SHA-256 50fc70417047a774…

MALICIOUS

PDF

39.4 KB Created: 2020-08-04 04:33:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a92167ffe27a398661807b129dbebd78 SHA-1: 710ff75850abf75cf1c635fe12753712b34f8a05 SHA-256: 50fc70417047a774d5d4e34e20d170800c9acb9a90aead169eb2f38722fbef0b
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a high number of embedded links, many pointing to Shopify domains, but one critical link directs to 'ttraff.ru', a known malicious redirector. The document body, though corrupted, contains text suggesting it is a book PDF, a common lure for phishing or malware distribution. The presence of numerous links and the malicious redirector indicate an attempt to drive traffic to malicious infrastructure.

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.ru/pify?keyword=alvaro+siza+book+pdf
    • http://komoxobuz.richmenlooks.com/uploads/1/3/1/3/131379706/8d2956df.pdf
    • http://files.lakemichigandance.com/uploads/1/3/1/3/131380236/9302408.pdf
    • http://files.shannonsarmy.com/uploads/1/3/2/6/132681556/jesofezurab_vubedaleti_jenuxinifo_wejedib.pdf
    • http://files.doramalech.net/uploads/1/3/0/8/130873949/a3118019.pdf
    • https://cdn.shopify.com/s/files/1/0430/9952/1181/files/95355228638.pdf
    • https://cdn.shopify.com/s/files/1/0429/6255/0940/files/9659430088.pdf
    • https://cdn.shopify.com/s/files/1/0430/5174/5442/files/sarere.pdf
    • https://cdn.shopify.com/s/files/1/0436/5330/0377/files/59680288484.pdf
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/rofaporoguwixal.pdf
    • https://cdn.shopify.com/s/files/1/0434/3355/8168/files/kuzifosulemokorazomazixul.pdf
    • https://cdn.shopify.com/s/files/1/0427/4136/6951/files/58674582122.pdf
    • https://cdn.shopify.com/s/files/1/0434/7835/2022/files/kujaletoxawidafejefo.pdf
    • https://cdn.shopify.com/s/files/1/0434/6108/3301/files/fojezube.pdf
    • https://cdn.shopify.com/s/files/1/0427/8861/8396/files/70860037111.pdf
    • https://cdn.shopify.com/s/files/1/0439/4660/6760/files/what_is_a_static_method_python.pdf
    • https://cdn.shopify.com/s/files/1/0429/3646/7619/files/61906011823.pdf
    • https://cdn.shopify.com/s/files/1/0437/0425/4615/files/81041985214.pdf
    • https://cdn.shopify.com/s/files/1/0431/5689/7947/files/nozijodujimaxisimof.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_off00004eb7.bin
c271e1cfe77717fd7fa71f752622b90e9ed1fcf712399373b54767b486be8276
pdf-font-stream PDF embedded font (sfnt) at offset 0x4EB7 4824 bytes
font_01_sfnt_off00005f23.bin
b29416df599b5dfbf6deaddc652f91bccca8ca56c4d05b6692dd60f138c70e52
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F23 9948 bytes
font_02_sfnt_off00008125.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x8125 4324 bytes