PDF malware analysis — malicious · c1cb98614415c59d

MALICIOUS

PDF

46.4 KB Created: 2020-07-27 11:05:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: bbf473ad10edd7cb7fd24047c834dda3 SHA-1: 947f312fc8d36d610bed2d9deccad83668b3fce6 SHA-256: c1cb98614415c59dac3e91d34af1bcad56dea066d4a86babc17f15b3099924f8

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'sync firefox bookmarks android browser', suggesting a social engineering lure. The presence of numerous links to external PDFs, many hosted on Shopify, indicates a link farm designed to distribute malicious content or improve SEO for malicious sites.

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=sync+firefox+bookmarks+android+browser
- http://files.trogonheights.net/uploads/1/3/0/8/130873840/totezoxavazeja.pdf
- http://files.heartlandarchery.ca/uploads/1/3/2/3/132302907/bubutoxitag.pdf
- http://files.connemaradancers.com/uploads/1/3/1/3/131398094/foradevibu-nitomuxowetume-befuburozim.pdf
- http://files.deshlerchamber.org/uploads/1/3/1/4/131438641/zedetuzikobapiwaxo.pdf
- http://files.bobbrooksinsurancecassat.com/uploads/1/3/0/9/130969699/xalaturapexuza-gewofixazogen.pdf
- http://files.connemaradancers.com/uploads/1/3/1/3/1
- https://cdn.shopify.com/s/files/1/0429/8869/9802/files/36275199571.pdf
- https://cdn.shopify.com/s/files/1/0428/7594/5126/files/67329082176.pdf
- https://cdn.shopify.com/s/files/1/0430/3713/0914/files/fuwaxirefobixawinovetib.pdf
- https://cdn.shopify.com/s/files/1/0435/2226/1143/files/22619446284.pdf
- https://cdn.shopify.com/s/files/1/0434/3165/7624/files/rizasaxinemuzakiluvi.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mowelikuzamutaj.pdf
- https://cdn.shopify.com/s/files/1/0431/8648/7455/files/gisuni.pdf
- https://cdn.shopify.com/s/files/1/0432/6345/9496/files/bojaxopad.pdf
- https://cdn.shopify.com/s/files/1/0429/3866/3079/files/99443821572.pdf
- https://cdn.shopify.com/s/files/1/0431/5460/4198/files/80886515767.pdf
- https://cdn.shopify.com/s/files/1/0433/6225/5013/files/48346761208.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_off000072c8.bin` `b98333b8f32f082b07129faddce231da88ce579104aa623758c4fdc7296a4efb`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x72C8	5412 bytes
`font_01_sfnt_off00008517.bin` `55c89439d477cde51f63c7edc223a0542824dab8cdbd0c0e17e1193cab55caa0`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8517	13500 bytes

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