PDF malware analysis — malicious · a7304f4ccc179002

MALICIOUS

PDF

45.0 KB Created: 2020-08-28 11:00:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: c39f163c8cf2a87e8e814ce14825b9d3 SHA-1: b4e6fb61c0accb47af63b497376e04dc61b2742c SHA-256: a7304f4ccc1790024aa41faba41f3334943fc447269dbb114461efc70b051e1b

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a malicious redirector link disguised as content related to Java programming. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates that the embedded URL leads to known malicious infrastructure. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, contains the same lure text and URLs.

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.ru/pify?keyword=java+how+to+program%252C+early+objects
- http://files.excelpodiatryclinic.com/uploads/1/3/1/4/131455398/tixizasipilonefivom.pdf
- http://wesomujub.davisionentertainment.com/uploads/1/3/2/8/132814930/viwepi.pdf
- http://files.supercoolyconcepts.com/uploads/1/3/1/0/131070327/ab9bea2d37.pdf
- http://murira.tom-lane.com/uploads/1/3/0/7/130776485/nubiwaruwagupolidiz.pdf
- http://files.livingwellandsimply.com/uploads/1/3/1/3/131379832/a885aa504e7d0d.pdf
- https://cdn.shopify.com/s/files/1/0451/2183/1065/files/45454334035.pdf
- https://cdn.shopify.com/s/files/1/0427/9717/0847/files/57174118700.pdf
- https://cdn.shopify.com/s/files/1/0437/6150/0309/files/business_english_for_beginners_a2.pdf
- https://cdn.shopify.com/s/files/1/0435/5876/4696/files/aicpa_ethics_exam_answers.pdf
- https://cdn.shopify.com/s/files/1/0464/2403/1384/files/76106162329.pdf
- https://cdn.shopify.com/s/files/1/0438/9139/2664/files/adobe_full_version_free_download.pdf
- https://cdn.shopify.com/s/files/1/0433/5606/1850/files/87936917590.pdf
- https://cdn.shopify.com/s/files/1/0438/3434/3574/files/58803154521.pdf
- https://cdn.shopify.com/s/files/1/0432/0146/2436/files/wavevezo.pdf
- https://cdn.shopify.com/s/files/1/0431/1806/7876/files/144242199.pdf
- https://cdn.shopify.com/s/files/1/0433/5036/0232/files/maytag_front_load_washer_manual.pdf
- https://cdn.shopify.com/s/files/1/0436/8701/8649/files/38027205697.pdf
- https://cdn.shopify.com/s/files/1/0432/4301/2256/files/agile_methodology.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_off0000647b.bin` `8979b413ff4d372e9f0121867cec633e8ad9eccb13e878d9b18bbb48356f84af`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x647B	5860 bytes
`font_01_sfnt_off00007876.bin` `2f1834f39323b46e6acdd42ba14f4952d4da8e16257373da2647d6e0e7374535`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7876	15048 bytes

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