PDF malware analysis — malicious · 5895e1de5fd1deb5

MALICIOUS

PDF

58.0 KB Created: 2020-07-28 09:54:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: c2c53a102c831fb5fe3f3d3c8f201dda SHA-1: f25bc0f8f33288d5eb690367b707788c557b8f41 SHA-256: 5895e1de5fd1deb5d6792dcbdeb943e07a9e86ba880a575c5472668b3bfbf680

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 domains and are likely part of a link farm designed to lure users to malicious sites. One critical heuristic specifically identified a link to a known malicious redirector. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the document's structure and embedded links are sufficient to infer a malicious intent focused on redirection.

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=answering+legal+conclusions+in+complaint
- http://files.mineolaindianriders.org/uploads/1/3/1/4/131437225/8488467.pdf
- http://files.bearlakeregionalcommission.org/uploads/1/3/1/4/131409526/tukibakosi-pakedazamopuk.pdf
- http://files.xn--aaretaupndler-ifb.ch/uploads/1/3/0/7/130738596/8242146.pdf
- http://files.kelseyeliason.com/uploads/1/3/0/7/130740477/vuditusu_wovorisowul.pdf
- http://files.xn--aar
- https://cdn.shopify.com/s/files/1/0432/8911/6840/files/fogipalerosigetoxobun.pdf
- https://cdn.shopify.com/s/files/1/0433/4488/7963/files/53215688899.pdf
- https://cdn.shopify.com/s/files/1/0431/8117/9048/files/vutozawegapasirum.pdf
- https://cdn.shopify.com/s/files/1/0429/2060/7900/files/21087520390.pdf
- https://cdn.shopify.com/s/files/1/0434/5289/1298/files/polutaxadokawufofezin.pdf
- https://cdn.shopify.com/s/files/1/0437/8486/3893/files/lupetisakomumosadofuxur.pdf
- https://cdn.shopify.com/s/files/1/0435/1708/3803/files/10005801744.pdf
- https://cdn.shopify.com/s/files/1/0431/3884/2779/files/suzudanigalazazovuwi.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/25006313747.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fuwemosuwizukuxitakalav.pdf
- https://cdn.shopify.com/s/files/1/0428/3334/6719/files/3589602959.pdf
- https://cdn.shopify.com/s/files/1/0427/8370/3206/files/51291251985.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_off0000a383.bin` `1985ad8d128ea7d2cf7953e821cb5f2c75520c20f623184b98f70e669b777758`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA383	5216 bytes
`font_01_sfnt_off0000b534.bin` `d7d05dbdfa76c5096c8a78995a8e171cc8e0cf247a1a2aa6c148c1d130986140`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB534	11724 bytes

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