PDF malware analysis — malicious · 83d9105d5b6434c4

MALICIOUS

PDF

51.8 KB Created: 2020-07-23 12:40:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 5a369c244d3365dfb3c1979321f4f3e1 SHA-1: 9890ebb6f6518da957bf449f1725bccc8d41c453 SHA-256: 83d9105d5b6434c49a069268a34754b52ddfb6676b19f5a1ba738dc9b00170b4

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, with the primary link directing to a known malicious redirector. The document body, though heavily obfuscated, appears to be related to a product manual search query, suggesting a lure to trick users into clicking the malicious link. The heuristic firings confirm the presence of a malicious redirector link and a link farm within the PDF.

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/wb?keyword=hp%20compaq%208200%20elite%20cmt%20pc%20manual
- http://files.rhondastruminger.net/uploads/1/3/1/0/131071076/1562942.pdf
- http://files.jacksonwritereditor.com/uploads/1/3/1/3/131379828/73d501b4a1.pdf
- http://files.bballguru.com/uploads/1/3/2/7/132740628/birikozovu_bobutusabete.pdf
- http://files.rbigroup.biz/uploads/1/3/0/7/130739713/felovoforinalave.pdf
- http://files.rearrangewithstyle.com/uploads/1/3/0/7/130775123/fikizujivonu.pdf
- https://cdn.shopify.com/s/files/1/0433/9623/5415/files/wuvepidofefupuvapumedakot.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61047377128.pdf
- https://cdn.shopify.com/s/files/1/0427/5725/9420/files/73363739762.pdf
- https://cdn.shopify.com/s/files/1/0431/2226/2178/files/4363505762.pdf
- https://cdn.shopify.com/s/files/1/0433/7192/1571/files/22261641962.pdf
- https://cdn.shopify.com/s/files/1/0438/9024/5787/files/94759320618.pdf
- https://cdn.shopify.com/s/files/1/0430/3070/8375/files/29188936712.pdf
- https://cdn.shopify.com/s/files/1/0431/0528/8349/files/95701157701.pdf
- https://cdn.shopify.com/s/files/1/0432/5824/9376/files/85784000820.pdf
- https://cdn.shopify.com/s/files/1/0433/7526/3909/files/88814731303.pdf
- https://cdn.shopify.com/s/files/1/0436/5221/9030/files/87525304106.pdf
- https://cdn.shopify.com/s/files/1/0433/2240/9125/files/bujebovejixoz.pdf
- https://cdn.shopify.com/s/files/1/0430/4610/9341/files/mixenumog.pdf
- https://cdn.shopify.com/s/files/1/0431/6135/4404/files/73591686078.pdf
- https://cdn.shopify.com/s/files/1/0428/3380/5471/files/50945547989.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_off000082d4.bin` `2b61cbd1d6bdb13b5ef10545691b8f6dcfc94b00732e82b31e4019851d414f22`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x82D4	5244 bytes
`font_01_sfnt_off0000948f.bin` `65122769d004928ccb31ab452fb4e1f0a7c46f5c516a9d1c6b5a2ee40c4534c6`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x948F	14492 bytes

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