Malicious PDF — malware analysis report

Static analysis result for SHA-256 435e6901c37554f4…

MALICIOUS

PDF

174.4 KB Created: 2020-08-18 23:10:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d5d85ad672095e2203b3ca35d6365b8b SHA-1: 14b0a876441e8d9bc8f934e8cdba008c4f4085ea SHA-256: 435e6901c37554f4ac2136386187ad5d25c0c01369e6e6660784ced20617855b
92 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by an ML classifier and contains a link to a known malicious redirector. The embedded URL points to 'ttraff.cc', which is associated with malicious redirection. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.cc/pify?keyword=sun+and+planets+information
    • http://files.bobconi.com/uploads/1/3/1/3/131381675/tufaf.pdf
    • http://files.qnhouse.com.au/uploads/1/3/0/7/130738753/8992713.pdf
    • http://files.anomalyseason.com/uploads/1/3/0/8/130873983/bimazo-guwanafode-sidam.pdf
    • https://cdn.shopify.com/s/files/1/0438/9715/9832/files/temusema.pdf
    • https://cdn.shopify.com/s/files/1/0432/5382/5704/files/jekosijunije.pdf
    • https://cdn.shopify.com/s/files/1/0430/9545/7946/files/autotagger_pro_apk_2._4._0.pdf
    • https://cdn.shopify.com/s/files/1/0439/4795/0248/files/suvigawima.pdf
    • https://cdn.shopify.com/s/files/1/0430/3791/7345/files/nanepofotoxusem.pdf
    • https://cdn.shopify.com/s/files/1/0431/1000/6940/files/wawagemitekigetalasilubuf.pdf
    • https://cdn.shopify.com/s/files/1/0431/2177/0657/files/2507216379.pdf
    • https://cdn.shopify.com/s/files/1/0439/1036/5339/files/archetypal_symbols.pdf
    • https://cdn.shopify.com/s/files/1/0438/3778/4224/files/application_form_for_irish_passport_renewal.pdf
    • https://cdn.shopify.com/s/files/1/0432/0077/4308/files/52671481078.pdf
    • https://cdn.shopify.com/s/files/1/0434/6845/6086/files/pojavutunikowoxa.pdf
    • https://cdn.shopify.com/s/files/1/0433/6690/8054/files/marine_benthic_zone.pdf
    • https://cdn.shopify.com/s/files/1/0430/7186/4993/files/38362436228.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000246eb.bin
0a6fa99a927756323331773e6648d32abe56c7a45ce1131f5b5db137418681e8
pdf-font-stream PDF embedded font (sfnt) at offset 0x246EB 4532 bytes
font_01_sfnt_off00025693.bin
a7a000a8cb8b38e8d797b84837dc07fe18846e2cb23a6752b8732ab9f19f3293
pdf-font-stream PDF embedded font (sfnt) at offset 0x25693 5292 bytes
font_02_sfnt_off00026877.bin
925ce27c5a89c5b7157022e43897c1f38945b8f816d2c08e2a9100ee96c38183
pdf-font-stream PDF embedded font (sfnt) at offset 0x26877 13584 bytes
font_03_sfnt_off000294e4.bin
ed0674485e3174f842c7a5c751b9aadad595053ff9fb9a5ba53e7b4cdbd4a13b
pdf-font-stream PDF embedded font (sfnt) at offset 0x294E4 16396 bytes