PDF malware analysis — malicious · e0709a713eda3830

MALICIOUS

PDF

43.6 KB Created: 2020-08-08 03:36:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: c2271e3943c1c18b3e18cc698d48c122 SHA-1: 4e793299eaf7e134e2451a4d19cda15255161c39 SHA-256: e0709a713eda3830d8bed7429fd7e54ad8082ad5dd427a10ef3ce53a9bd96b86

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, with the primary one directing to a known malicious redirector. The document body, though obfuscated, contains the URL 'https://ttraff.com/pify?keyword=achtung+cthulhu+rpg+pdf', suggesting a lure to a malicious site. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external PDF links, likely for SEO manipulation or to distribute malicious content. The ML classifier strongly flags this PDF as malicious.

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.com/pify?keyword=achtung+cthulhu+rpg+pdf
- http://files.womenartistsreaction.com/uploads/1/3/2/3/132302863/8d22be5d98d153.pdf
- http://files.malikeusoff.com/uploads/1/3/0/7/130739778/0a4417b4d.pdf
- http://files.uncommongoodcollective.org/uploads/1/3/1/3/131380482/5694a5.pdf
- http://files.friscoterracepoa.com/uploads/1/3/0/8/130815026/2389229.pdf
- http://files.bgiplus.com/uploads/1/3/1/3/131379615/c9036433.pdf
- https://cdn.shopify.com/s/files/1/0431/3009/3728/files/52136586250.pdf
- https://cdn.shopify.com/s/files/1/0430/4742/0066/files/86238562247.pdf
- https://cdn.shopify.com/s/files/1/0437/6304/0408/files/batizexojino.pdf
- https://cdn.shopify.com/s/files/1/0438/6357/2635/files/wamozizatomobitidu.pdf
- https://cdn.shopify.com/s/files/1/0431/2160/6817/files/2074189451.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rixaraxamixenapo.pdf
- https://cdn.shopify.com/s/files/1/0438/6196/7013/files/thesis_on_agricultural_extension_and_rural_development.pdf
- https://cdn.shopify.com/s/files/1/0430/2965/9797/files/41164058616.pdf
- https://cdn.shopify.com/s/files/1/0432/6513/0660/files/85453024788.pdf
- https://cdn.shopify.com/s/files/1/0427/7387/2807/files/mulunosugaxere.pdf
- https://cdn.shopify.com/s/files/1/0433/9079/5941/files/gloomhaven_rules.pdf
- https://cdn.shopify.com/s/files/1/0429/1880/5657/files/mugen_vore_characters.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_off000062ba.bin` `b20813ca2a9f5ca2edb7490b13bb1a8af333a8073ea8a3b44c32248273e94917`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x62BA	5020 bytes
`font_01_sfnt_off000073ce.bin` `b3b252b06f855971d7c22069ebea0b853ca65ec291cd0d38a2d30ff4b8be9cbb`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x73CE	14812 bytes

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