PDF malware analysis — malicious · f4178d407efb1d00

MALICIOUS

PDF

37.9 KB Created: 2020-10-06 19:27:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23

MD5: 309989ab48a61621dbf6545b653e50b9 SHA-1: 7e13fcc64fe9161c4211a09437c917061eeef8d1 SHA-256: f4178d407efb1d009a1feb12f3905aab911e04f7b46ea94f134e2bd494514f7d

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, ttraff.cc, which is a strong indicator of malicious intent. The ML classifier also flagged this PDF with high confidence. Although no scripts were explicitly extracted, the PDF structure and embedded link suggest it's designed to lure users to a malicious site, likely for phishing or malware delivery.

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://ttraff.cc/pify?keyword=killer+worms+2 In PDF document text
- http://wiwuwa.kss-creations.com/uploads/1/3/2/3/132302859/6955577.pdfIn PDF document text
- http://files.brianskahn.com/uploads/1/3/1/6/131607053/barudir-vukef.pdfIn PDF document text
- https://site-1044239.mozfiles.com/files/1044239/gizobazowemakifekekanumod.pdfIn PDF document text
- https://site-1037069.mozfiles.com/files/1037069/lixeb.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/6041/0021/files/88989108333.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/3550/8392/files/79730723368.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6557/2514/files/6_gauge_wire_home_depot.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5339/1782/files/gold_gym_stride_trainer_300_elliptical_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0482/9636/2148/files/53445012258.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/9699/8048/files/9027562921.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_off00005924.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5924	4816 bytes
SHA-256: `9f35d28ecffc82ee929f0e3ec07411576eaf877eaba289af783bb19e2b62a7cc`
`font_01_sfnt_off00006984.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6984	9888 bytes
SHA-256: `c12e4990e4a5313b3bf23b2182eea24c5f1d36a0b288079fd348b0f218261ebd`

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