Malicious PDF — malware analysis report

Static analysis result for SHA-256 79042ba82dab6bfc…

MALICIOUS

PDF

39.7 KB Created: 2020-08-06 16:50:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 020b04a482580994d46f91fd35f97590 SHA-1: a89ee0b566952d31878e8a9ef220fa0c0b8e68cf SHA-256: 79042ba82dab6bfcbc9dc53dd77a91a8318df53c5b03102bbade8a052811dc0e
150 Risk Score

Malware Insights

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

The PDF document was flagged as malicious by an ML classifier and contains a critical heuristic indicating it links to known malicious redirector infrastructure. It also exhibits characteristics of a PDF link farm, with numerous external links, many pointing to Shopify domains. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to a malicious site. 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=amines+nomenclature+pdf
    • http://files.suntastictans.co/uploads/1/3/1/4/131408465/1843988.pdf
    • http://files.thesurflodgesanctuary.shop/uploads/1/3/0/7/130739742/3502388.pdf
    • http://files.windhofcareers.com/uploads/1/3/0/7/130740174/3386689.pdf
    • https://cdn.shopify.com/s/files/1/0434/7356/7901/files/penguin_readers_level_3_notting_hill.pdf
    • https://cdn.shopify.com/s/files/1/0434/8405/3669/files/upload_to_google_sites.pdf
    • https://cdn.shopify.com/s/files/1/0434/3886/6593/files/wazuwolixogimedipodonawa.pdf
    • https://cdn.shopify.com/s/files/1/0430/6799/8362/files/pdf_to_paint.pdf
    • https://cdn.shopify.com/s/files/1/0427/8861/8396/files/80796045620.pdf
    • https://cdn.shopify.com/s/files/1/0436/0945/6803/files/govur.pdf
    • https://cdn.shopify.com/s/files/1/0431/5293/3024/files/44342095242.pdf
    • https://cdn.shopify.com/s/files/1/0436/4930/2693/files/lewefipufiligiju.pdf
    • https://cdn.shopify.com/s/files/1/0440/4012/6629/files/mutub.pdf
    • https://cdn.shopify.com/s/files/1/0435/2920/7957/files/bipalosibafusodeke.pdf
    • https://cdn.shopify.com/s/files/1/0432/7663/2214/files/poulan_pro_weed_eater.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_off00005c89.bin
0b101b27d635e6130e36233d0e97494e14ded74cf885c7776f802de14b53f7cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C89 5288 bytes
font_01_sfnt_off00006e6e.bin
d1fbb2d578f1c044d836bad55753991b9352b447c7c6a0b54f598a2eebcd92a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E6E 10864 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.