PDF malware analysis — malicious · a8f914e21e056dc2

MALICIOUS

PDF

46.3 KB Created: 2020-08-06 13:13:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 97d19d8fcc603d451b70e9cda3dba879 SHA-1: d5513ff0fd66843408bfa64de2f584fb0c8a5470 SHA-256: a8f914e21e056dc24a414bb61ba3df60367f88f6625231e87acf7bda1e815e01

150 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is https://ttraff.cc/pify?keyword=practical+skills+in+chemistry+john+dean+pdf, which is designed to redirect users to further malicious content. The document body, though heavily obfuscated, contains references to the book title and the malicious URL, reinforcing the lure. No scripts were extracted, but the PDF structure and link farm indicate a social engineering attempt to drive traffic to malicious infrastructure.

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=practical+skills+in+chemistry+john+dean+pdf
- http://votokowu.aretemediaacademy.com/uploads/1/3/1/4/131407995/59f192.pdf
- http://files.midwifeyork.com/uploads/1/3/1/4/131452778/bilej.pdf
- http://files.iplaw1.net/uploads/1/3/1/4/131437423/9ebee4.pdf
- http://files.houseofblackart.com/uploads/1/3/1/3/131383743/1357375.pdf
- https://cdn.shopify.com/s/files/1/0434/4669/8146/files/50729690095.pdf
- https://cdn.shopify.com/s/files/1/0427/7148/0742/files/sujomojawefeganaxiw.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/1028728638.pdf
- https://cdn.shopify.com/s/files/1/0431/7406/8390/files/turasapitapiwuva.pdf
- https://cdn.shopify.com/s/files/1/0430/9201/7305/files/26492586905.pdf
- https://cdn.shopify.com/s/files/1/0432/9901/2766/files/mikibelo.pdf
- https://cdn.shopify.com/s/files/1/0433/7880/2846/files/dokexiba.pdf
- https://cdn.shopify.com/s/files/1/0431/5083/5878/files/folotetewenarewetabason.pdf
- https://cdn.shopify.com/s/files/1/0431/4529/8074/files/52308431058.pdf
- https://cdn.shopify.com/s/files/1/0432/3452/5352/files/totezaluwowamojalisivojev.pdf
- https://cdn.shopify.com/s/files/1/0432/1571/6519/files/80974606154.pdf
- https://cdn.shopify.com/s/files/1/0432/8446/3784/files/zend_avesta_italiano.pdf
- https://cdn.shopify.com/s/files/1/0432/6598/2632/files/88963763967.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_off000073a7.bin` `1bfd445fb1ff7800371c07f7b7293be5810d9c4412197f7b3da665e8732d59b3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x73A7	5636 bytes
`font_01_sfnt_off000086b2.bin` `a97fbf0cf2b462e3834cfcec02146108eb1cb6e04cd336484e5b4974d0a867db`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x86B2	10856 bytes

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