PDF malware analysis — malicious · 8017077bfeffca3a

MALICIOUS

PDF

45.2 KB Created: 2020-07-23 10:51:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: ae9141cde9449d1c854ce104959d37b9 SHA-1: 116f978c71578e97fbd6784fff7be45518e23654 SHA-256: 8017077bfeffca3a5b281ec3241a391c942387ffe50545b08f61fc264b4af4ae

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to redirector infrastructure. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK firing indicates that at least one of these links leads to known malicious content. The PDF_SEO_LINK_FARM heuristic further suggests a deliberate attempt to create a link farm for SEO manipulation, likely to distribute malicious content. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the primary attack vector appears to be the malicious redirection links.

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=embossed+sheet+metal+panels
- http://files.massoutrage.com/uploads/1/3/0/7/130738771/60f566f05c.pdf
- http://files.ryanogan.com/uploads/1/3/1/1/131163617/2992915.pdf
- http://files.nphsjrwolfpack.com/uploads/1/3/1/4/131483253/pageponiputi_gosalobire_vopepas_fatibo.pdf
- http://files.thestudioofperformingarts.com/uploads/1/3/1/4/131437885/vikamusupokas-widiko-zimifig.pdf
- http://files.thestudioofperformingarts.com/uploads/1/3/1/4/131437885/vikamusupokas-widi
- https://cdn.shopify.com/s/files/1/0429/2254/1219/files/44474395200.pdf
- https://cdn.shopify.com/s/files/1/0438/3460/5728/files/2490049803.pdf
- https://cdn.shopify.com/s/files/1/0431/8360/3876/files/16881150080.pdf
- https://cdn.shopify.com/s/files/1/0431/3694/2234/files/livimaz.pdf
- https://cdn.shopify.com/s/files/1/0432/1751/8751/files/nubivodika.pdf
- https://cdn.shopify.com/s/files/1/0434/2087/6962/files/jobabexip.pdf
- https://cdn.shopify.com/s/files/1/0437/3980/7893/files/93853917951.pdf
- https://cdn.shopify.com/s/files/1/0431/7233/1675/files/gefasapupufup.pdf
- https://cdn.shopify.com/s/files/1/0432/4841/8973/files/kikoj.pdf
- https://cdn.shopify.com/s/files/1/0430/6888/3098/files/nisipotupumugafaf.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nimapudusakodinufuzexive.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_off00006f0e.bin` `698aadf9d01550329d7c46a9a15b8f40a204530421352cac6219dc6238cb35e9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6F0E	4940 bytes
`font_01_sfnt_off00007fab.bin` `afbed16475daec67977a0f8faf9648ec2088dc5007348a84e20574b7a906f5e7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7FAB	11916 bytes

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