PDF malware analysis — malicious · cb6228545463d4c6

MALICIOUS

PDF

44.6 KB Created: 2020-08-06 11:30:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: bb8b4429c3a6941d1ce035dea53458f5 SHA-1: 74615d9a998abf00878261e31b1909c3a6efe197 SHA-256: cb6228545463d4c68b7be15e72e1ffcc17b15c929e61096466317f48bbde42b0

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to benign-looking resources on Shopify. However, one critical heuristic identified a link to a known malicious redirector infrastructure. This suggests the document is designed to lure users into clicking malicious links under the guise of academic content, likely leading to further malware delivery or phishing attempts. No scripts were extracted, but the PDF structure and link farm are indicative of a malicious redirection campaign.

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=social+and+emotional+development+in+adolescence+pdf
- http://files.pfume.com/uploads/1/3/1/3/131383924/2205199.pdf
- http://files.bohemiacollections.net/uploads/1/3/1/3/131398406/a93bd4a33a4a.pdf
- http://files.fathertomsfamilycoffee.org/uploads/1/3/1/4/131437362/vonerevisosaweza.pdf
- https://cdn.shopify.com/s/files/1/0446/0855/3123/files/calculus_by_anton_10th_edition.pdf
- https://cdn.shopify.com/s/files/1/0431/1125/2132/files/45697649112.pdf
- https://cdn.shopify.com/s/files/1/0435/9972/4702/files/ambition_in_macbeth.pdf
- https://cdn.shopify.com/s/files/1/0432/7027/5237/files/xovibevon.pdf
- https://cdn.shopify.com/s/files/1/0434/5197/3789/files/ncert_11th_class_chemistry_textbook.pdf
- https://cdn.shopify.com/s/files/1/0430/2739/8807/files/86070774375.pdf
- https://cdn.shopify.com/s/files/1/0430/7881/1810/files/zezamotesaxokitulusijela.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/76222514852.pdf
- https://cdn.shopify.com/s/files/1/0430/5253/1869/files/jidudalelabewibe.pdf
- https://cdn.shopify.com/s/files/1/0431/9969/2958/files/fupomevovidijadujexir.pdf
- https://cdn.shopify.com/s/files/1/0433/3309/1480/files/67697025262.pdf
- https://cdn.shopify.com/s/files/1/0427/9664/6556/files/13363870888.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rabilividobakomitunaxizug.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_off00006e9b.bin` `51d56a8ac8e885d10555d13572a34b216c441dbce28b3456e8b7a0d42af88e1c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6E9B	5368 bytes
`font_01_sfnt_off000080de.bin` `254ad5fa5b4fdb7a05473f1281d5a005f85bb757d9d6df29d809c6a774ac6d8d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x80DE	10556 bytes

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