Malicious PDF — malware analysis report

Static analysis result for SHA-256 897b2c769a763e1b…

MALICIOUS

PDF

46.9 KB Created: 2020-08-19 15:11:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: be71faec3d19ca7cd0b38e56e2daae0a SHA-1: 35467fb06086b78fe784a79a8deb015f72f0f1be SHA-256: 897b2c769a763e1be9a4d1c20f7f0b60ed76034053b56812286e1d0975d8873b
150 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical link to a known malicious redirector at ttraff.com. The document body, though heavily obfuscated, contains text related to 'free action movies to watch' and the malicious URL, indicating a lure to entice users to click the malicious link. The ML classifier also strongly flagged this PDF as malicious. 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.com/pify?keyword=free+action+movies+to+watch
    • http://files.eng.thehubofarts.net/uploads/1/3/2/8/132815365/rutudawod.pdf
    • http://files.pdescape.org/uploads/1/3/2/6/132681536/74d35e.pdf
    • http://files.staychampaign.com/uploads/1/3/2/3/132303126/vexomu-tanuwivefowemel-fozifosasewage-tobura.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/64830269039.pdf
    • https://cdn.shopify.com/s/files/1/0436/9511/2347/files/12743830093.pdf
    • https://cdn.shopify.com/s/files/1/0433/5537/3720/files/susowizanuvaz.pdf
    • https://cdn.shopify.com/s/files/1/0434/4568/2332/files/rainfed_agriculture_notes.pdf
    • https://cdn.shopify.com/s/files/1/0437/2407/9254/files/bijuvotifexafaxel.pdf
    • https://cdn.shopify.com/s/files/1/0434/5459/5224/files/70629394092.pdf
    • https://cdn.shopify.com/s/files/1/0434/6413/0710/files/aberturas_de_xadrez_para_leigos_completo.pdf
    • https://cdn.shopify.com/s/files/1/0428/5209/0022/files/mavoko.pdf
    • https://cdn.shopify.com/s/files/1/0434/6583/4649/files/minecraft_pe_0._12._0_servers.pdf
    • https://cdn.shopify.com/s/files/1/0432/4599/4146/files/risk_of_rain_2_sticky_bomb.pdf
    • https://cdn.shopify.com/s/files/1/0427/5427/7532/files/best_voicemeeter_settings.pdf
    • https://cdn.shopify.com/s/files/1/0435/1993/4628/files/revivevu.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_off00006c42.bin
3597a62b682a0b78d78d607e139d4aa7acd75b13b14ea500de9066af64963ee4
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C42 4904 bytes
font_01_sfnt_off00007cc5.bin
90db913fcadbb5f993f6f54fd926af9eff1ac4b9589828034716e7da03a9c729
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CC5 10436 bytes
font_02_sfnt_off0000a09f.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0xA09F 4324 bytes