PDF malware analysis — malicious · 22f2a2842cae0857

MALICIOUS

PDF

58.0 KB Created: 2020-08-07 20:01:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 633be3c2e958e88e02257645f650ec82 SHA-1: fc79d7ec4d07ca4523514c3158c22587ea88095b SHA-256: 22f2a2842cae08574381d67f2fd0aa9f2c7b7e5ee237606a1afb825639882a57

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, pointing to ttraff.ru. This URL is embedded within the document body, disguised as a pharmaceutical guideline PDF. The sample also contains a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic. The primary malicious IOC is the redirector URL.

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=21+cfr+part+11+guidelines+for+pharmaceuticals+pdf
- http://files.eclexica.studio/uploads/1/3/0/7/130776131/284a959b7.pdf
- http://files.kefaloniatravel.net/uploads/1/3/2/6/132680813/darikekat.pdf
- http://wozuvo.dermawand.greatwebsitebuilder.com/uploads/1/3/1/4/131453574/7681970.pdf
- http://files.cymzsweetkre8tionz.com/uploads/1/3/1/3/131383743/8758762.pdf
- http://files.totemfoodproducts.com/uploads/1/3/1/1/131164112/jasiresogiwex-fexufazozuke-fabufa-duvola.pdf
- https://cdn.shop
- https://cdn.shopify.com/s/files/1/0448/6791/1842/files/ielts_writing_task_1_academic_samples_answers.pdf
- https://cdn.shopify.com/s/files/1/0431/5702/9024/files/dell_r730xd_spec_sheet.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bixebor.pdf
- https://cdn.shopify.com/s/files/1/0432/7754/9728/files/28672851345.pdf
- https://cdn.shopify.com/s/files/1/0435/4228/2399/files/mabixozitilupojojata.pdf
- https://cdn.shopify.com/s/files/1/0431/6866/1670/files/80926109032.pdf
- https://cdn.shopify.com/s/files/1/0431/8570/1025/files/80263636833.pdf
- https://cdn.shopify.com/s/files/1/0437/7490/2430/files/high_pass_filter_audacity.pdf
- https://cdn.shopify.com/s/files/1/0429/6127/2983/files/sademitalugukeketaxisata.pdf
- https://cdn.shopify.com/s/files/1/0437/4790/1592/files/64627086557.pdf
- https://cdn.shopify.com/s/files/1/0435/2117/9802/files/kidoliloronumew.pdf
- https://cdn.shopify.com/s/files/1/0437/5307/8933/files/51029018621.pdf
- https://cdn.shopify.com/s/files/1/0434/0390/3127/files/18370559065.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_off0000a4f5.bin` `497ab828238bd92545ddd0d74edb74f399ffa4a356b81a68ef41a6f8a5b98261`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA4F5	5660 bytes
`font_01_sfnt_off0000b813.bin` `4d4b68c9cc1582ed0864d1cf12652b6063ad5674c1dfb9ff82e200e7edbb356e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB813	9980 bytes

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