Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae2e0cbebdc1067c…

MALICIOUS

PDF

61.4 KB Created: 2020-08-01 01:57:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 12102edf1d8aef2b253403eeffdfa8fb SHA-1: e6a1221ede8cebf7e7cfd1e362108d795a4f24cf SHA-256: ae2e0cbebdc1067c222cb3b1d89b0ffd6d5d4734dd4d5562c731b1d766a0fe24
152 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one identified as a malicious redirector (ttraff.com). The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. The presence of a link farm indicates an attempt to distribute or mask the malicious destination. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.com/pify?keyword=tomica+wright+eazy+e+wife
    • http://files.shawanosandyshores.com/uploads/1/3/1/4/131454126/joxofuwepo.pdf
    • http://files.sanfranciscoschoolofcopywriting.com/uploads/1/3/0/7/130739693/a03d255147dc0.pdf
    • http://files.janeincolour.com/uploads/1/3/0/8/130873828/4402645.pdf
    • https://cdn.shopify.com/s/files/1/0431/3301/0074/files/86562159717.pdf
    • https://cdn.shopify.com/s/files/1/0427/6033/9623/files/18522234020.pdf
    • https://cdn.shopify.com/s/files/1/0432/6113/2968/files/69007978802.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/malerofefamizekigo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0291/2158/files/the_present_spencer_johnson.pdf
    • https://cdn.shopify.com/s/files/1/0434/0996/5212/files/dilubepo.pdf
    • https://cdn.shopify.com/s/files/1/0429/5963/4591/files/sufixagalusi.pdf
    • https://cdn.shopify.com/s/files/1/0430/0485/4426/files/tugaz.pdf
    • https://cdn.shopify.com/s/files/1/0437/6595/6759/files/dorizujax.pdf
    • https://cdn.shopify.com/s/files/1/0431/2947/1130/files/69683095418.pdf
    • https://cdn.shopify.com/s/files/1/0438/1723/8685/files/mojisabatum.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b1f9.bin
02809c95e23ba3293e66bc611cf157ee4e9ac30e8e92aba23b41716e46757fd0
pdf-font-stream PDF embedded font (sfnt) at offset 0xB1F9 5280 bytes
font_01_sfnt_off0000c3e6.bin
c60619da57b7090654e4984f60eab3c792a93f2a7e1a04e195822ecface4a793
pdf-font-stream PDF embedded font (sfnt) at offset 0xC3E6 10820 bytes