PDF malware analysis — malicious · 52ddb38302d3e486

MALICIOUS

PDF

91.9 KB Created: 2020-08-23 20:52:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 996d0f047060d26d4fef77b0552f3068 SHA-1: 3ff13fe537b81d747d6e74887836658b315e77ff SHA-256: 52ddb38302d3e486319dd61c0e5847e940ded02659f692b1526f3acdfe1a8cb9

128 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded external links, many of which point to Shopify domains hosting other PDFs, indicative of a link farm. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=fermented+goat+milk+for+dogs+answers'. The document body, though heavily obfuscated, contains this same URL, suggesting it is the primary lure. The presence of urgency language further supports a malicious intent, likely to trick users into clicking the malicious link.

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.
Urgency / deadline lure low SE_URGENCY_LURE

Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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=fermented+goat+milk+for+dogs+answers
- http://files.decgallery.com/uploads/1/3/1/3/131384789/cc8b20d.pdf
- https://cdn.shopify.com/s/files/1/0428/4104/7206/files/80685851134.pdf
- https://cdn.shopify.com/s/files/1/0429/3473/0911/files/66078041102.pdf
- https://cdn.shopify.com/s/files/1/0432/4642/0136/files/latest_awards_and_honours_2020_download.pdf
- https://cdn.shopify.com/s/files/1/0429/8738/9087/files/easy_origami_boat_template.pdf
- https://cdn.shopify.com/s/files/1/0441/4255/9384/files/spatio_temporal_autoencoder_for_video_anomaly_detection.pdf
- https://cdn.shopify.com/s/files/1/0433/7978/5891/files/13957524301.pdf
- https://cdn.shopify.com/s/files/1/0435/1652/6752/files/69651134306.pdf
- https://cdn.shopify.com/s/files/1/0439/9644/6878/files/inseminacion_artificial_en_alpacas.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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000113cc.bin` `b62ce9c0d09c3cdbb48786fe51410bbb293440a5fc0c6d07eb455f6c53b70511`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x113CC	3540 bytes
`font_01_sfnt_off00012060.bin` `82eef20a6f892f398748a32f5dd160e180785c867e407022219255c1e6f5b57e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12060	5128 bytes
`font_02_sfnt_off000131c8.bin` `66ca5c3b69fcb62e9ce15cd6e49370fa1da6e70a582a0668aa2809d365e31be8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x131C8	10112 bytes
`font_03_sfnt_off00015462.bin` `05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x15462	4324 bytes

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