Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dfdae4146cc778b…

MALICIOUS

PDF

42.5 KB Created: 2020-08-06 05:21:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 599e81c79fe809fb64af6071a8e4c618 SHA-1: 4c7e039f46e2376ae3296270b5b402cceb0e8f31 SHA-256: 2dfdae4146cc778b32ac8910e0becff4f3a03ff5dd0d9bddba8c2b358d8f1f04
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=shakespeare+sonnet+73+analysis+pdf'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with a significant portion hosted on 'cdn.shopify.com'. The document body, though heavily obfuscated, contains references to these URLs, suggesting an attempt to disguise malicious activity under the guise of providing analysis documents. 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=shakespeare+sonnet+73+analysis+pdf
    • http://files.pcolaaphrodite.com/uploads/1/3/1/1/131164012/komenezovuwulu_savaberupa.pdf
    • http://files.razortattoos.com/uploads/1/3/0/8/130874652/3562925.pdf
    • http://files.valeriesplayhouse.com/uploads/1/3/1/4/131406403/rilavapijijepapa.pdf
    • http://files.iaphilosophicalanthropology.org/uploads/1/3/1/3/131384636/kipiboj.pdf
    • https://cdn.shopify.com/s/files/1/0435/2881/4741/files/bakakuwafafobiwolodoru.pdf
    • https://cdn.shopify.com/s/files/1/0431/1174/3639/files/permanent_retirement_oblivion.pdf
    • https://cdn.shopify.com/s/files/1/0432/6971/8176/files/giwixijojavabutomipuw.pdf
    • https://cdn.shopify.com/s/files/1/0434/4630/4920/files/30053170614.pdf
    • https://cdn.shopify.com/s/files/1/0428/3963/8179/files/lirojokofojitegugux.pdf
    • https://cdn.shopify.com/s/files/1/0434/7373/1741/files/tokyo_subway_map_2020.pdf
    • https://cdn.shopify.com/s/files/1/0432/9121/3988/files/85523921225.pdf
    • https://cdn.shopify.com/s/files/1/0432/4586/3067/files/99731156664.pdf
    • https://cdn.shopify.com/s/files/1/0438/0937/4365/files/wikixukero.pdf
    • https://cdn.shopify.com/s/files/1/0432/3291/9720/files/beethoven_symphony_5_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kubogofire.pdf
    • https://cdn.shopify.com/s/files/1/0432/8911/6836/files/pemigebeseto.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/74098669839.pdf
    • https://cdn.shopify.com/s/files/1/0434/3765/4178/files/meaning_of_teaching_strategies.pdf
    • https://cdn.shopify.com/s/files/1/0430/8038/4674/files/xizadibotomu.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_off0000668f.bin
e54bf9201584a07fdafa113f54d5504c617ee7226dc4dac4302e8b26c62f715c
pdf-font-stream PDF embedded font (sfnt) at offset 0x668F 5644 bytes
font_01_sfnt_off000079d3.bin
019273d6a83aa100f6f0f8ea7ce110bb1bb9676f6e6099e2f415025cbdff172d
pdf-font-stream PDF embedded font (sfnt) at offset 0x79D3 10236 bytes