Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f694c0138df0757…

MALICIOUS

PDF

34.8 KB Created: 2020-08-10 12:25:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 62a2da437e68d3d1e03ff036a7eedda9 SHA-1: c18dfd3d1bfe217a767f675391633868f6a8630b SHA-256: 7f694c0138df07571593a340d699b89c418ab009dfcd2485fdb0f23f99378a09
120 Risk Score

Malware Insights

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

The PDF file contains a link farm with 17 external PDF links, many of which point to shopify.com domains. One of the primary links directs to a known malicious redirector at ttraff.ru. This suggests the document is designed to lead users to malicious content through a series of redirects and linked PDFs. No scripts were extracted from this sample.

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.ru/pify?keyword=microbiologia+veterinaria+quinn+pdf
    • http://farogipa.mg-aviationphotography.com/uploads/1/3/2/8/132814930/44fc8a4ce7.pdf
    • http://files.paschoolpress.org/uploads/1/3/2/6/132683228/pidob.pdf
    • http://files.ndeauction.org/uploads/1/3/0/8/130814466/fatidev-lotebozir-lesagenus.pdf
    • http://files.koehlerscale.com/uploads/1/3/1/3/131382030/1461808.pdf
    • https://cdn.shopify.com/s/files/1/0432/5271/1582/files/94035380793.pdf
    • https://cdn.shopify.com/s/files/1/0436/2492/3298/files/wimumofupopipit.pdf
    • https://cdn.shopify.com/s/files/1/0438/4676/2656/files/31846951438.pdf
    • https://cdn.shopify.com/s/files/1/0429/9456/5271/files/jquery_1._9_1_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/0747/4844/files/wugegesorunuped.pdf
    • https://cdn.shopify.com/s/files/1/0437/7827/7525/files/check_if_key_in_dictionary_python.pdf
    • https://cdn.shopify.com/s/files/1/0430/2657/9610/files/18380583206.pdf
    • https://cdn.shopify.com/s/files/1/0438/8693/6219/files/71087550480.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mojedisubeweful.pdf
    • https://cdn.shopify.com/s/files/1/0439/6302/3518/files/97052569396.pdf
    • https://cdn.shopify.com/s/files/1/0433/9433/4870/files/kefinolox.pdf
    • https://cdn.shopify.com/s/files/1/0447/3815/0549/files/pandoc_html_to_css.pdf
    • https://cdn.shopify.com/s/files/1/0438/4315/8166/files/88518905906.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_off000049bc.bin
a565c8a92881c4916dd237d9e05a55ba01703565d6002f1594042cc326e89e5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49BC 5476 bytes
font_01_sfnt_off00005c78.bin
d1a49e2d2a137e58ed5782bcd081278f7987c841730af236ca58ecaf36a58d39		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C78 9876 bytes

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