PDF malware analysis — malicious · 2ba21086ae4f42de

MALICIOUS

PDF

34.3 KB Created: 2020-09-03 17:15:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: c2097d87794af58fbddc9bd73a6221bd SHA-1: b246e8b352586ee80ab3b3c22a9c0b4748d87a9a SHA-256: 2ba21086ae4f42de6c98b88d3657f65f1a2491fea3c3abd3a9a84f9dda163dab

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 external PDF files, suggesting a link farm or SEO poisoning attempt. One prominent link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the text "msc botany book pdf" and the malicious URL, reinforcing the lure. No scripts were extracted from this sample.

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.link/wix?keyword=msc+botany+book+pdf
- https://cdn.shopify.com/s/files/1/0433/5144/1560/files/distributive_property_worksheet_no_variables.pdf
- https://cdn.shopify.com/s/files/1/0437/4613/2119/files/topusar.pdf
- https://cdn.shopify.com/s/files/1/0428/5438/3782/files/kuruv.pdf
- https://static.usrfiles.com/ugd/b8c837_f0df0ede68d24257857ef5e4911b38e9.pdf
- https://static.usrfiles.com/ugd/52b593_20f4b743f0184f86ab35b4097f8e53eb.pdf
- https://static.usrfiles.com/ugd/b8c837_32fe25f75ec94347bb927212096f365a.pdf
- https://static.usrfiles.com/ugd/d5415a_0093dbf86dfb453fafb597b98b744d44.pdf
- https://static.usrfiles.com/ugd/868f76_f4d3f6aba1a042f19e0e5587903728b2.pdf
- https://static.usrfiles.com/ugd/a98ecc_9b4327a7081542d2981b0496661d9c7d.pdf
- https://static.usrfiles.com/ugd/b8c837_b7cc99874ed64601ab3f186fd024d79d.pdf
- https://static.usrfiles.com/ugd/b7ab08_5473d1bca81f41aabf7af6ddfe89aaf3.pdf
- https://static.usrfiles.com/ugd/0a3240_15785546f1544eaf94a2cb6efe04e4e5.pdf
- https://static.usrfiles.com/ugd/82e28d_80ab76be4a3c4e5496cd3a5209a8b3f4.pdf
- https://static.usrfiles.com/ugd/e5cbe5_9559983949b846c4b38dc149686db891.pdf
- https://static.usrfiles.com/ugd/599026_93e1de43c2b2466c8a402ff8cb01924f.pdf
- https://static.usrfiles.com/ugd/45fd81_853b5e5774d64b1b8cabe85abc5ab186.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_off0000490e.bin` `1f92412e85149a4220cc3d723e76df789e43ee0c14fe0d20184fad42bbc5b8f8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x490E	5332 bytes
`font_01_sfnt_off00005b5e.bin` `f0f94a2549273b253a30c46079df0e5f8a86015afd8baf6dee3bcf23df072169`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5B5E	9752 bytes

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