Malicious PDF — malware analysis report

Static analysis result for SHA-256 489ac468c2f38675…

MALICIOUS

PDF

37.0 KB Created: 2020-08-06 16:46:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4bc6671e26e51de2c50eb45ea131ecbc SHA-1: 077d7d9b45d1b290b23893cf377f41863fa856b9 SHA-256: 489ac468c2f38675d478b08f484cd70812fdd391c980389ec7346cad59bd27bb
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is likely the primary malicious payload delivery mechanism. The document body, though heavily obfuscated, contains the same URL, suggesting it is the intended destination. No scripts were extracted, and the PDF structure itself does not indicate further malicious activity beyond the redirection.

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=way+back+into+love+piano+pdf
    • http://files.seeaparis.com/uploads/1/3/1/3/131383486/varepozorifari-mixazugik.pdf
    • http://files.lenasboutiqueofsweets.org/uploads/1/3/2/7/132710779/xelepu.pdf
    • http://files.thestudiochallenge.com/uploads/1/3/2/6/132682119/4651088.pdf
    • https://cdn.shopify.com/s/files/1/0432/9422/8630/files/25558363493.pdf
    • https://cdn.shopify.com/s/files/1/0429/4931/2666/files/bulusadabawiruzaz.pdf
    • https://cdn.shopify.com/s/files/1/0431/0522/2818/files/5257400218.pdf
    • https://cdn.shopify.com/s/files/1/0431/3789/2509/files/57982885697.pdf
    • https://cdn.shopify.com/s/files/1/0429/5622/6716/files/suridowexubazofufek.pdf
    • https://cdn.shopify.com/s/files/1/0430/9866/9220/files/kepizu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0280/5921/files/tonov.pdf
    • https://cdn.shopify.com/s/files/1/0437/9800/3874/files/88119201925.pdf
    • https://cdn.shopify.com/s/files/1/0430/9748/9561/files/visenisuxibabukuxakele.pdf
    • https://cdn.shopify.com/s/files/1/0430/7265/1413/files/39392064416.pdf
    • https://cdn.shopify.com/s/files/1/0432/2128/7080/files/my_way_piano_sheet_music_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/14490041284.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_off00004a81.bin
5bc62374dbbffd45fcbc314278d1cbdc461ccdeeabd2e99ce707d09eef3eb6a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A81 5256 bytes
font_01_sfnt_off00005c94.bin
8d486dcc4daff400b8e53f8dc22bce349525201ed56e85e3e1658305606eb7e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C94 13700 bytes

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