PDF malware analysis — malicious · 92fb690fbdd6a7e6

MALICIOUS

PDF

63.5 KB Created: 2020-07-31 11:55:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 42134c1eae9ce7e1218de310adac8141 SHA-1: 90ad5beacb68dae3853f202bdfceb7a8f43bb426 SHA-256: 92fb690fbdd6a7e6dbf68d148f7b21a2be78386f9eeacc3a070214a10a46a222

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous links, many of which are designed to appear as legitimate book downloads, a common SEO spam tactic. One prominent link redirects to a known malicious redirector infrastructure, suggesting an attempt to lead the user to harmful content. The document body, though heavily obfuscated, contains text related to 'introduction to virology pdf download', reinforcing the lure.

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=introduction+to+virology+pdf+download
- http://files.chesniehearthealth.com/uploads/1/3/0/7/130775347/3397326.pdf
- http://files.donnaham.com/uploads/1/3/1/4/131407958/1368945.pdf
- http://files.alessandrorech.com/uploads/1/3/1/3/131380175/kuvufuzadekosoxatuf.pdf
- http://files.shirleywatsonfinancial.com/uploads/1/3/0/7/130776033/vifapawofagadokikofu.pdf
- http://files.primitivedreams.ca/uploads/1/3/1/4/131483361/gukemuxunakun.pdf
- https://cdn.shopify.com/s/files/1/0435/8543/7853/files/lonamimigusip.pdf
- https://cdn.shopify.com/s/files/1/0438/9902/7611/files/14469246188.pdf
- https://cdn.shopify.com/s/files/1/0430/3529/5905/files/84116222666.pdf
- https://cdn.shopify.com/s/files/1/0437/7441/0901/files/53725391436.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vixegenosevisime.pdf
- https://cdn.shopify.com/s/files/1/0431/3900/6618/files/durojepufupufuwofu.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zonamanasalusowalu.pdf
- https://cdn.shopify.com/s/files/1/0434/4417/5013/files/ravekuruvudesirolimil.pdf
- https://cdn.shopify.com/s/files/1/0434/6282/0005/files/33324988338.pdf
- https://cdn.shopify.com/s/files/1/0432/9776/7592/files/muwewa.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66541571973.pdf
- https://cdn.shopify.com/s/files/1/0437/0078/1208/files/sovonepo.pdf
- https://cdn.shopify.com/s/files/1/0434/7104/4770/files/80451916249.pdf
- https://cdn.shopify.com/s/files/1/0432/4828/7912/files/fogilowalofagizirob.pdf
- https://doi.org/10.7326/0003-4819-44-3-584_1
- 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_off0000b20b.bin` `31b0bf060e1b9dd42f8e1af83bf1da3641796e82e57b0d57b2dd142d300687ff`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB20B	5100 bytes
`font_01_sfnt_off0000c382.bin` `6793bc5721c9a263b760ed277060d78f9b9d58e7022958db544a9d0222e5123c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC382	14092 bytes

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