Malicious PDF — malware analysis report

Static analysis result for SHA-256 e278e37d9aba4a26…

MALICIOUS

PDF

62.9 KB Created: 2020-08-21 23:52:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c368e6404d96a87fa2d97db7851dd689 SHA-1: c8e3f64b54f4dd9cb98af17f46e923a2834732f0 SHA-256: e278e37d9aba4a26a5d0b9364bb896647d9bda56c622eeeb79abdfc9584fc8ed
150 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific URL pointing to a known malicious redirector, disguised as a bug report. The primary heuristic indicates a malicious redirector link, and the ML classifier strongly supports a malicious classification. The embedded URL is reconstructed as 'https://ttraff.com/pify?keyword=bug+report+redmi+note+4', which is likely intended to lead the user to a phishing or malware distribution site.

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=bug+report+redmi+note+4
    • http://files.thesoulfulbirth.com/uploads/1/3/0/8/130874284/8380944.pdf
    • http://files.dynamicjourneystravel.com/uploads/1/3/1/4/131453998/kesexibid-nadodud-rugigofo-mubudikidagiba.pdf
    • http://files.joachimkoops.com/uploads/1/3/2/6/132682627/6189989.pdf
    • http://files.spencersnygg.com/uploads/1/3/0/7/130775465/pajigubov.pdf
    • https://cdn.shopify.com/s/files/1/0431/0623/8613/files/87585455838.pdf
    • https://cdn.shopify.com/s/files/1/0440/2829/7381/files/jisixenugo.pdf
    • https://cdn.shopify.com/s/files/1/0446/9909/1098/files/how_to_find_least_count_of_spectrometer.pdf
    • https://cdn.shopify.com/s/files/1/0433/9243/4343/files/82051954231.pdf
    • https://cdn.shopify.com/s/files/1/0437/6484/2657/files/30851262488.pdf
    • https://cdn.shopify.com/s/files/1/0432/6014/9910/files/dapup.pdf
    • https://cdn.shopify.com/s/files/1/0437/5393/0901/files/behavioral_finance_psychology_decision_making_and_markets_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/8644/4699/files/how_to_merge_files_on_mac.pdf
    • https://cdn.shopify.com/s/files/1/0432/7469/8902/files/lorikazevesofowowowi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/telisupuf.pdf
    • https://cdn.shopify.com/s/files/1/0430/0334/7098/files/97950737208.pdf
    • https://cdn.shopify.com/s/files/1/0429/6428/7651/files/budgeting_tools.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_off0000adc5.bin
404182aa2178cbd483a2fdbbc64d186ae30f8ac51c35f15ac576eaf3e636af8b
pdf-font-stream PDF embedded font (sfnt) at offset 0xADC5 4876 bytes
font_01_sfnt_off0000be46.bin
d50953dc81ea7c1da564b9f7ba5bdf59f9d062cde5e3678b4bd3af05f15148c1
pdf-font-stream PDF embedded font (sfnt) at offset 0xBE46 10040 bytes
font_02_sfnt_off0000e071.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0xE071 4324 bytes