Malicious PDF — malware analysis report

Static analysis result for SHA-256 9dcffa6e2021c072…

MALICIOUS

PDF

50.6 KB Created: 2020-08-11 18:48:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 75d0bbede4db8ab09eaa934b66c019e9 SHA-1: aaa475468c7fe63b4c491eec6afa9cc3272ed119 SHA-256: 9dcffa6e2021c0725e8179255617da8eac83258a3af40c30d229db64996c807c
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=learn+storyboarding+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The document body is heavily obfuscated but contains the same malicious URL. The primary attack pattern involves luring the user to click on a link that redirects to malicious infrastructure.

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=learn+storyboarding+pdf
    • http://pepobamo.simplywholesometreats.ca/uploads/1/3/0/8/130873958/265309.pdf
    • http://files.arcancientaromatherapy.com/uploads/1/3/1/3/131398139/jidas.pdf
    • http://files.lsuhealthsciences.com/uploads/1/3/1/4/131409909/26dadb2eb5.pdf
    • https://cdn.shopify.com/s/files/1/0432/5031/9528/files/65431072319.pdf
    • https://cdn.shopify.com/s/files/1/0432/0133/1360/files/luzavupipezepulowab.pdf
    • https://cdn.shopify.com/s/files/1/0429/6795/7660/files/backlash_in_gears.pdf
    • https://cdn.shopify.com/s/files/1/0429/3243/7158/files/59886332962.pdf
    • https://cdn.shopify.com/s/files/1/0431/6587/6390/files/sources_of_genetic_variation.pdf
    • https://cdn.shopify.com/s/files/1/0434/1828/8284/files/husqvarna_yta22v46_manual.pdf
    • https://cdn.shopify.com/s/files/1/0440/7522/1144/files/microsoft_access_manual_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/0702/5060/files/basic_arabic_words_to_english.pdf
    • https://cdn.shopify.com/s/files/1/0432/9380/2646/files/jopogepupas.pdf
    • https://cdn.shopify.com/s/files/1/0433/6399/1717/files/jugemuzotisoketegibugarug.pdf
    • https://cdn.shopify.com/s/files/1/0430/7877/9047/files/lamelagomubezata.pdf
    • https://cdn.shopify.com/s/files/1/0431/4421/6730/files/67971984530.pdf
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/51823789401.pdf
    • https://cdn.shopify.com/s/files/1/0430/0403/5221/files/niluxemasavoxuge.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/1/0430/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007ae9.bin
48f511f1e8c5f6934592d7aef07c985d58eb00fba79d08dfcd4a42877a319959
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AE9 5148 bytes
font_01_sfnt_off00008c7d.bin
ddd581dfceac6c0c07bea30b43e96767dc9ae430a28153abd646f047bc13e75f
pdf-font-stream PDF embedded font (sfnt) at offset 0x8C7D 10184 bytes
font_02_sfnt_off0000af58.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0xAF58 4324 bytes