Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bd37c01450d30a4…

MALICIOUS

PDF

39.8 KB Created: 2020-08-13 21:37:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a0a2e3e933d9bb3a80b547ec277f066c SHA-1: e12d144fd97a4fd9bf4a8a409ec8edd8be6e65eb SHA-256: 1bd37c01450d30a43c914cfe52af942e14af99f52130610341dab14533513f8d
150 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=miya+bhai+song+dj+remix+ringtone', which is also flagged as malicious. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning attempt to distribute malicious content. 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.cc/pify?keyword=miya+bhai+song+dj+remix+ringtone
    • http://nelokale.destinationdelicious.com/uploads/1/3/2/8/132816202/xiwoz.pdf
    • http://bajir.sacredhearth.net/uploads/1/3/0/7/130776031/gexujudapovawid.pdf
    • http://files.rg-si.com/uploads/1/3/0/8/130874613/d08d6055bc214c.pdf
    • https://cdn.shopify.com/s/files/1/0434/3277/1750/files/soxibisalenujukuv.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30036161276.pdf
    • https://cdn.shopify.com/s/files/1/0431/9772/6880/files/amuleto_bolao.pdf
    • https://cdn.shopify.com/s/files/1/0437/1018/5621/files/geography_book_by_khullar.pdf
    • https://cdn.shopify.com/s/files/1/0431/4189/0209/files/cell_cycle_and_cell_growth_control.pdf
    • https://cdn.shopify.com/s/files/1/0432/4445/4056/files/96276241697.pdf
    • https://cdn.shopify.com/s/files/1/0435/0391/1076/files/cours_sur_energie_renouvelable.pdf
    • https://cdn.shopify.com/s/files/1/0430/9496/6421/files/6758467187.pdf
    • https://cdn.shopify.com/s/files/1/0429/3731/9590/files/69318421321.pdf
    • https://cdn.shopify.com/s/files/1/0435/1010/4228/files/buget.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wadilizesiwegokadokepub.pdf
    • https://cdn.shopify.com/s/files/1/0432/8026/9462/files/pezisegaxowitagimukafude.pdf
    • https://cdn.shopify.com/s/files/1/0433/3407/4523/files/37224334934.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fadanamimurusekebunom.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_off00005041.bin
9d3e3b224fce153b7664e92b55b29d73cbe9fe7425373b9b31416546c5662894
pdf-font-stream PDF embedded font (sfnt) at offset 0x5041 5384 bytes
font_01_sfnt_off0000626a.bin
7c1cfe1d3e0801ede60da858e491ae76bf93e0b978c11dadb948cefb7ae90fca
pdf-font-stream PDF embedded font (sfnt) at offset 0x626A 9868 bytes
font_02_sfnt_off000083f9.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x83F9 4324 bytes