Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ac294db0cb3dae0…

MALICIOUS

PDF

80.8 KB Created: 2020-08-26 02:24:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5412d8703e99440c410fb9eb10bddf86 SHA-1: b06922c445f0f048d8560f1a59e32c8a8ba80eec SHA-256: 4ac294db0cb3dae091f9f61abb462335966ababa19046505efc480422374035a
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file exhibits characteristics of a link farm, with numerous embedded URLs. One critical heuristic identified a link to a known malicious redirector, 'ttraff.cc', which likely serves as a lure to further malicious sites. The presence of many Shopify-hosted PDF links suggests an attempt to manipulate search engine results or distribute content through a seemingly legitimate platform.

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=k%25C3%25B6peklerin+insanlarla+%25C3%25A7iftle%25C5%259Fmesi
    • http://files.aaweiss.com/uploads/1/3/2/3/132302894/8881620.pdf
    • http://files.borlandclinic.org/uploads/1/3/1/3/131380213/julera_pitokuzat.pdf
    • https://cdn.shopify.com/s/files/1/0435/5099/8679/files/monthly_income_statement.pdf
    • https://cdn.shopify.com/s/files/1/0427/5470/3526/files/nokuma.pdf
    • https://cdn.shopify.com/s/files/1/0432/6447/5304/files/95303647089.pdf
    • https://cdn.shopify.com/s/files/1/0431/9012/4708/files/70086866462.pdf
    • https://cdn.shopify.com/s/files/1/0429/6612/2662/files/70034738401.pdf
    • https://cdn.shopify.com/s/files/1/0432/1175/1588/files/bawuzipiragab.pdf
    • https://cdn.shopify.com/s/files/1/0429/9377/8837/files/zopetunukejurazuriliju.pdf
    • https://cdn.shopify.com/s/files/1/0430/1042/4993/files/85523839613.pdf
    • https://cdn.shopify.com/s/files/1/0433/7631/2478/files/36868077666.pdf
    • https://cdn.shopify.com/s/files/1/0462/6540/1495/files/55931421555.pdf
    • https://cdn.shopify.com/s/files/1/0434/4381/4556/files/calendrier_mai_2020__imprimer.pdf
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/vifabugimobatu.pdf
    • https://cdn.shopify.com/s/files/1/0437/2732/3301/files/fetexewifebarapag.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_off0000f8f5.bin
0b2405fc2aeb464f2ea1be00a3afa8a005d8f3f857833b280d419a89b7d18d23		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF8F5 5648 bytes
font_01_sfnt_off00010b27.bin
01005dde411257a7549729608782198b87d0a8ede6845c3e2e0f15ff25f83704		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B27 13196 bytes

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