PDF malware analysis — malicious · 47672447613a31b4

MALICIOUS

PDF

41.8 KB Created: 2020-08-25 13:45:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: ca6d0dfb47c32c10384b90a62c83ca6b SHA-1: 3e9ccc5b24b41fffef269d7b581206f9d630a33f SHA-256: 47672447613a31b4902d895ba6d1642ba0ec4317c5ca80a5ff747c2d345ee264

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a malicious redirector link disguised as a Castrol Power 1 20W50 PDF. The ML classifier strongly indicated maliciousness. The document body and embedded link structure suggest a lure to a malicious site via the URL https://ttraff.ru/pify?keyword=castrol+power+1+20w50+pdf.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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.
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.ru/pify?keyword=castrol+power+1+20w50+pdf
- http://files.myardysslife.com/uploads/1/3/1/3/131380786/3576291.pdf
- http://jubal.andadavid.com/uploads/1/3/1/1/131164104/2bd8e7b4.pdf
- https://cdn.shopify.com/s/files/1/0433/5294/8901/files/zozabiv.pdf
- https://cdn.shopify.com/s/files/1/0433/5144/1560/files/80526458729.pdf
- https://cdn.shopify.com/s/files/1/0433/6146/8567/files/mukepisijele.pdf
- https://cdn.shopify.com/s/files/1/0432/0267/4845/files/gurenedef.pdf
- https://cdn.shopify.com/s/files/1/0433/6504/0286/files/majimabuxum.pdf
- https://cdn.shopify.com/s/files/1/0434/3591/7464/files/crystal_report_version_13._0._15.pdf
- https://cdn.shopify.com/s/files/1/0429/8991/2218/files/zibedirarafenuvutozis.pdf
- https://cdn.shopify.com/s/files/1/0429/5085/2762/files/git_untrack_folder.pdf
- https://cdn.shopify.com/s/files/1/0432/0323/1908/files/96675608490.pdf
- https://cdn.shopify.com/s/files/1/0432/5208/9000/files/53438366019.pdf
- https://cdn.shopify.com/s/files/1/0431/1767/4656/files/kukekobuwude.pdf
- https://cdn.shopify.com/s/files/1/0440/5516/7126/files/49345534674.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_off000063c7.bin` `dc42214479e0672d8013c4da344cfd4cc37037a5f23006e68ce0700746a4d3c4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x63C7	5480 bytes
`font_01_sfnt_off00007699.bin` `d65f602b67e973f3052c441b5790f9db53ea3c35209b92c32e47f4e57e4e27d4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7699	10456 bytes

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