Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab75aac581a74a03…

MALICIOUS

PDF

41.4 KB Created: 2020-08-19 06:45:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b9a37b7233174a133e6a7645e855691b SHA-1: e4405415c5a3c2379986c0da497d2b1c7e0b823a SHA-256: ab75aac581a74a035f38cb5c387a8b02bdb1a8ecc5db748bc8ed06cb1ac31761
150 Risk Score

Malware Insights

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

The PDF contains a high density of external links, many pointing to Shopify domains, but one critical link redirects to a known malicious infrastructure at 'ttraff.cc'. The document body, though heavily obfuscated, contains the same URL, suggesting a lure to a malicious site disguised as a helpful resource. The ML classifier strongly supports the malicious nature of this PDF.

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=remove+duplicates+in+excel+2003+spreadsheet
    • http://files.asadeltanu.org/uploads/1/3/1/3/131384429/1435233.pdf
    • http://sevuv.courtenaydore.com/uploads/1/3/0/8/130874493/pezidudoxuk.pdf
    • https://cdn.shopify.com/s/files/1/0438/2654/4802/files/1430171329.pdf
    • https://cdn.shopify.com/s/files/1/0432/5244/9444/files/47164210788.pdf
    • https://cdn.shopify.com/s/files/1/0434/6193/5261/files/la_jolla_tide_chart.pdf
    • https://cdn.shopify.com/s/files/1/0429/9145/2314/files/22191435253.pdf
    • https://cdn.shopify.com/s/files/1/0432/3088/8094/files/15907110019.pdf
    • https://cdn.shopify.com/s/files/1/0427/8976/5276/files/72394116532.pdf
    • https://cdn.shopify.com/s/files/1/0433/1618/3205/files/vudekiboxifuximunixagodax.pdf
    • https://cdn.shopify.com/s/files/1/0430/9732/5732/files/atrocity_act_in_gujarati.pdf
    • https://cdn.shopify.com/s/files/1/0434/2553/0005/files/19977033109.pdf
    • https://cdn.shopify.com/s/files/1/0435/0319/0181/files/eset_antivirus_mac.pdf
    • https://cdn.shopify.com/s/files/1/0436/4071/7462/files/37410354552.pdf
    • https://cdn.shopify.com/s/files/1/0432/7338/8190/files/bakixili.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/
    • https://cdn.shopify.com/s/files/1/0430/9732/5732/files/atrocity_

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000621f.bin
9c0d13533daba435e79d24349a0d641c8018ff1a5de20a00e5709c57d5483a40		 pdf-font-stream PDF embedded font (sfnt) at offset 0x621F 5888 bytes
font_01_sfnt_off00007602.bin
55e4b43ea7d05590a1122ac68bdf1d8e3f4c57adda92b43b4fb206e6fac4df3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7602 9960 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.