PDF malware analysis — malicious · b78d49412a228f38

MALICIOUS

PDF

33.3 KB Created: 2020-10-31 16:43:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15

MD5: 1df6426cd117f281cb3d828fc0b35c87 SHA-1: ba9fd527b3de454a8a5244190ff7704ad0a6caa3 SHA-256: b78d49412a228f3877f6b26cde1431c1cc09d97d20a99bcb5e71806d5309ffe8

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://cctraff.ru/pify?keyword=w+boylston+house+of+pizza+menu'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of a malicious URL within the document body indicates an attempt to lure the user to a harmful site, likely for phishing or to download further malicious content.

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.
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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://cctraff.ru/pify?keyword=w+boylston+house+of+pizza+menu In PDF document text
- https://cdn-cms.f-static.net/uploads/4365655/normal_5f8a48fe100cb.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4405929/normal_5f91e66bc9a4e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369646/normal_5f9533bb5f67a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4374368/normal_5f908b6ec86fc.pdfIn PDF document text
- https://dejolezeg.weebly.com/uploads/1/3/2/8/132815968/botufubifujezobulizu.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/tesodagiwor/vezukogaridafomawirif.pdfIn PDF document text
- https://s3.amazonaws.com/fusidejebi/87859127128.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0498/7617/2958/files/sugefasevetenirijiwutug.pdfIn PDF document text
- https://s3.amazonaws.com/sugaguxagu/best_to_word_doc_converter.pdfIn PDF document text
- https://s3.amazonaws.com/debamijizozexo/kofimuxemuvarok.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00004309.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4309	5352 bytes
SHA-256: `ea0cb0fccdc518a8416676c4e2fdb4e7eccc36108d60a09ff3e164b2035dec14`
`font_01_sfnt_off00005531.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5531	10380 bytes
SHA-256: `65fbb1db494ecbf6525a662fd63df13cd8bc665dfbeec46aa70095748e4b3cf1`

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