Malicious PDF — malware analysis report

Static analysis result for SHA-256 2001fd2a8b5afe2d…

MALICIOUS

PDF

52.1 KB Created: 2020-08-16 11:28:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bbc3e1c4b0c89975b3f7b4e10daff524 SHA-1: 34cfa1879cd063508e76aee02ef76c32bade7593 SHA-256: 2001fd2a8b5afe2d0a2a545d3c6866a22a0c7bd399b941b72a04165cd58a5f98
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which is disguised as a search result for song lyrics. This indicates a phishing or social engineering attempt to drive traffic to malicious infrastructure. The PDF also contains a large number of external links, many hosted on cdn.shopify.com, suggesting a link farm or SEO poisoning tactic to improve search engine ranking for malicious content. No scripts were extracted from this sample.

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=chirutha+telugu+songs+free++320kbps
    • http://files.stephenfrausto.com/uploads/1/3/2/6/132695646/nuremogoborafuvi.pdf
    • http://xemagus.cemeterydays.com/uploads/1/3/0/7/130739664/rolizodiwuwagupuke.pdf
    • https://cdn.shopify.com/s/files/1/0429/9377/8837/files/wanekilipevak.pdf
    • https://cdn.shopify.com/s/files/1/0428/7440/5020/files/94917071106.pdf
    • https://cdn.shopify.com/s/files/1/0432/5661/0969/files/ratel.pdf
    • https://cdn.shopify.com/s/files/1/0428/3501/7884/files/87787422331.pdf
    • https://cdn.shopify.com/s/files/1/0438/2552/8989/files/69553743386.pdf
    • https://cdn.shopify.com/s/files/1/0432/1126/0067/files/79446634059.pdf
    • https://cdn.shopify.com/s/files/1/0429/2254/1219/files/sajafikipepebasaxikisef.pdf
    • https://cdn.shopify.com/s/files/1/0432/1411/0880/files/ankylosing_spondylitis_book.pdf
    • https://cdn.shopify.com/s/files/1/0439/4103/6200/files/inuyasha_final_act.pdf
    • https://cdn.shopify.com/s/files/1/0438/5406/9925/files/pekefepunala.pdf
    • https://cdn.shopify.com/s/files/1/0430/8667/6117/files/beturerabivabigabupujig.pdf
    • https://cdn.shopify.com/s/files/1/0432/6631/0299/files/ucsf_hospitalist_handbook_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/6605/7116/files/self_rope_bondage.pdf
    • https://cdn.shopify.com/s/files/1/0438/7520/5288/files/business_english_sentences.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007550.bin
6a9727dd0ba66590953b069595ad062e6b4bf3774409ae6ecf865c60ecc9e038
pdf-font-stream PDF embedded font (sfnt) at offset 0x7550 5712 bytes
font_01_sfnt_off000088b8.bin
790b552e3dd7433441c1e430fe68ca325b69767b0554a5d40e918b778c7e5785
pdf-font-stream PDF embedded font (sfnt) at offset 0x88B8 14120 bytes
font_02_sfnt_off0000b547.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0xB547 4324 bytes