PDF malware analysis — malicious · e4b6acba17ba6c46

MALICIOUS

PDF

36.7 KB Created: 2020-08-02 16:51:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 989c2f75452a99102c0398771961c823 SHA-1: 5ff946c3597b296a73cb5f361c339b2e186dc785 SHA-256: e4b6acba17ba6c46cf59aa4d1919c242ece29b148d292e5204e70f59d2041d95

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on various domains, suggesting a link farm for SEO poisoning or traffic redirection. The primary malicious link, 'https://ttraff.cc/pify?keyword=edelbrock+1406+manual+pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to the 'edelbrock 1406 manual pdf' and the authoring application 'wkhtmltopdf', indicating a lure to disguise the malicious intent. The ML classifier strongly flagged this PDF as malicious.

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=edelbrock+1406+manual+pdf
- http://files.whitecoag.org/uploads/1/3/1/4/131453588/fikutufawob.pdf
- http://files.albertahealingarts.com/uploads/1/3/1/8/131860378/bukuxupigadilij_xazezuwur_piguf.pdf
- http://files.fudosanbunka.com/uploads/1/3/0/7/130740316/gawor-xokasabu-molelekufinujav.pdf
- http://files.goreybypass.com/uploads/1/3/0/7/130740442/bikufuni.pdf
- http://files.transformedforlifeuganda.com/uploads/1/3/1/3/131384335/68ed566ff6.pdf
- https://cdn.shopify.com/s/files/1/0432/4953/3088/files/15493762007.pdf
- https://cdn.shopify.com/s/files/1/0435/2838/8767/files/babubegorevexupuwis.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pewowa.pdf
- https://cdn.shopify.com/s/files/1/0432/5844/5979/files/1920_hindi_move.pdf
- https://cdn.shopify.com/s/files/1/0436/6431/0425/files/tejubebuxipajizuxiporov.pdf
- https://cdn.shopify.com/s/files/1/0428/9029/7507/files/38357209067.pdf
- https://cdn.shopify.com/s/files/1/0428/3426/4231/files/pajosejusugug.pdf
- https://cdn.shopify.com/s/files/1/0438/9090/1144/files/92196415273.pdf
- https://cdn.shopify.com/s/files/1/0438/3630/9666/files/39421924075.pdf
- https://cdn.shopify.com/s/files/1/0429/3646/7623/files/sunquest_pro_16se.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.

Filename	Kind	Source	Size
`font_00_sfnt_off000050df.bin` `65c4659f0ce0c1562643f57e8e4c20be85e0cde889b57bd31934f2efb302a17d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x50DF	5720 bytes
`font_01_sfnt_off00006445.bin` `8860aedd49b8d716d621a5c15c764cd4c2c14ea576d4ae4e13c457f83aa8e8f4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6445	9852 bytes

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