Malicious PDF — malware analysis report

Static analysis result for SHA-256 f19e465008021773…

MALICIOUS

PDF

44.5 KB Created: 2020-08-16 20:40:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b9514e512022c87e2dd9a89c1e621cbf SHA-1: cd4c502b610f15fe4dd6ea1e87e51a49269fc5ca SHA-256: f19e4650080217736ba707e32cb5ba6599dc26c9e8fc727c5c7c6dd4af495b39
150 Risk Score

Malware Insights

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

The PDF contains numerous links, including one to a known malicious redirector at 'https://ttraff.ru/pify?keyword=utorrent+android+external+sd+card'. This suggests the document is designed to trick users into visiting malicious sites, likely for phishing or malware distribution. The presence of a large number of external PDF links also indicates a link farm SEO tactic. 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=utorrent+android+external+sd+card
    • http://juxebepil.newtonmusic.org/uploads/1/3/1/6/131606575/wejev.pdf
    • http://files.guidetosurrogacy.com/uploads/1/3/1/3/131398117/38847e594.pdf
    • https://cdn.shopify.com/s/files/1/0432/3144/5156/files/xbox_one_bluetooth_controller.pdf
    • https://cdn.shopify.com/s/files/1/0431/0538/6647/files/ponatebimevazetolexebojew.pdf
    • https://cdn.shopify.com/s/files/1/0429/6019/1641/files/83242011233.pdf
    • https://cdn.shopify.com/s/files/1/0440/1384/6693/files/adobe_reader_download_free_windows_8.pdf
    • https://cdn.shopify.com/s/files/1/0437/3859/5482/files/mivaraf.pdf
    • https://cdn.shopify.com/s/files/1/0430/7881/1810/files/8454161499.pdf
    • https://cdn.shopify.com/s/files/1/0440/1581/2766/files/mathematics_book_class_8_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/2623/6071/files/least_common_multiple_definition.pdf
    • https://cdn.shopify.com/s/files/1/0427/5660/4070/files/pinojozo.pdf
    • https://cdn.shopify.com/s/files/1/0440/0083/7782/files/94648907979.pdf
    • https://cdn.shopify.com/s/files/1/0434/7042/2180/files/bavolajasezug.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_off00007110.bin
0de5ffad185bb0a96f8588721ed394853db755058932c48a0f97cb5663914d7a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7110 4992 bytes
font_01_sfnt_off00008211.bin
e9ff474120964b51b3f31269f5d36a92116a8acb5059b47da9a054fbebb1de39		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8211 10304 bytes

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