Malicious PDF — malware analysis report

Static analysis result for SHA-256 96e94702c9a77df7…

MALICIOUS

PDF

55.4 KB Created: 2020-08-12 18:53:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b7830eeb658514f8b4a79e90ad2d8e32 SHA-1: 64867ab6fa9248b344900a31b1d27f80accb5d19 SHA-256: 96e94702c9a77df7d10c846273e61ccffbc2223657acf3b08c0c737078e8e532
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 research paper. The document body also contains this URL. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic firing confirms the malicious nature of the link. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, likely for SEO manipulation or to obscure the malicious destination.

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/wb?keyword=magnetocaloric%20energy%20conversion%20from%20theory%20to%20applications%20pdf
    • http://files.burkebros-cheltenham.co.uk/uploads/1/3/0/8/130814411/c1878a8.pdf
    • http://files.mccormickqwik.com/uploads/1/3/0/9/130969452/7921003.pdf
    • http://firufiz.year8religionlynam.com/uploads/1/3/0/7/130776760/zutan_fakujokemi.pdf
    • http://zewudiwo.roarsandwhispersphs.com/uploads/1/3/1/4/131453005/6962362.pdf
    • http://files.landsendguildofartists.co.uk/uploads/1/3/1/6/131606803/nirimakojunuk.pdf
    • https://cdn.shopify.com/s/files/1/0434/0645/9029/files/morowarizuxoniwumemi.pdf
    • https://cdn.shopify.com/s/files/1/0429/6579/4965/files/32261885826.pdf
    • https://cdn.shopify.com/s/files/1/0436/5654/4409/files/camping_checklist_australia.pdf
    • https://cdn.shopify.com/s/files/1/0435/5378/3957/files/33759439958.pdf
    • https://cdn.shopify.com/s/files/1/0433/4321/6789/files/rowodiwifetaxijume.pdf
    • https://cdn.shopify.com/s/files/1/0437/5900/9943/files/88266199628.pdf
    • https://cdn.shopify.com/s/files/1/0432/1126/0062/files/zarew.pdf
    • https://cdn.shopify.com/s/files/1/0431/0905/6666/files/getodazusokuzeromiro.pdf
    • https://cdn.shopify.com/s/files/1/0431/4578/9600/files/miocardiopatia_dilatada_periparto.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/91337380597.pdf
    • https://cdn.shopify.com/s/files/1/0433/1097/3083/files/branches_of_horticulture_and_its_definition.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000081ec.bin
50ffe1a3c9290ea156700e3b4cc0b08f01e2946c684582f0b259761f1bf9f50b
pdf-font-stream PDF embedded font (sfnt) at offset 0x81EC 5736 bytes
font_01_sfnt_off0000954e.bin
df272422ef778a2ed13ff578cd2c8f633b33931c2e271a3cc72717ee6deca3f2
pdf-font-stream PDF embedded font (sfnt) at offset 0x954E 10788 bytes
font_02_sfnt_off0000ba1e.bin
b746209829ab2c6483433553037e2806aa40e4dabe1943e391f02759c7fa582f
pdf-font-stream PDF embedded font (sfnt) at offset 0xBA1E 16176 bytes