PDF malware analysis — malicious · 347385c0110c1f31

MALICIOUS

PDF

46.0 KB Created: 2020-08-10 03:14:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a4925dce5170b40246c9dbff60b498d2 SHA-1: 77ed53cae6112fa70b710c8e952b12006a5afc08 SHA-256: 347385c0110c1f31227f2f2d6e422d88a0747f32d03f68ec2a0b06b7e6587ef1

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, but one critical link directs to a known malicious redirector. This suggests a link farm or SEO poisoning tactic designed to drive traffic to malicious infrastructure. The document body, though partially corrupted, contains keywords related to 'Energias renovables libros pdf' and the malicious URL, reinforcing the lure.

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=energias+renovables+libros+pdf
- http://files.lrse-nd.org/uploads/1/3/1/4/131436956/b4bfac965.pdf
- http://files.seyabookfest.com/uploads/1/3/1/4/131437676/7710110.pdf
- http://wanipil.fastparcel.net/uploads/1/3/0/8/130814328/babomisilo_vebibasitibum_lakagiduxip.pdf
- http://files.easttexasplacenta.com/uploads/1/3/1/3/131384071/tefurukelinav.pdf
- https://cdn.shopify.com/s/files/1/0433/9331/9079/files/wuwimedojawibegajuluzix.pdf
- https://cdn.shopify.com/s/files/1/0430/0577/1939/files/disazexudaborubazeg.pdf
- https://cdn.shopify.com/s/files/1/0435/0754/8326/files/32082563726.pdf
- https://cdn.shopify.com/s/files/1/0433/7801/6421/files/36596479089.pdf
- https://cdn.shopify.com/s/files/1/0432/2571/0756/files/how_to_make_friends_and_influence_people.pdf
- https://cdn.shopify.com/s/files/1/0428/3714/7811/files/jufugisubogijepakazaxap.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lapifobojupe.pdf
- https://cdn.shopify.com/s/files/1/0435/4483/8303/files/larevi.pdf
- https://cdn.shopify.com/s/files/1/0435/9107/3947/files/54486599038.pdf
- https://cdn.shopify.com/s/files/1/0431/0935/1578/files/sofanimipinenen.pdf
- https://cdn.shopify.com/s/files/1/0427/8291/6767/files/kevimerobo.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000065b4.bin` `184d2ac276d296e5ff1a133b76935daa39b5dadf57399f856107423b21b7ec1a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x65B4	5072 bytes
`font_01_sfnt_off000076fc.bin` `c5c0c70275e3f453a03fd090a2256f66323328ff08ff24bdc699ce5cacfb702a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x76FC	11260 bytes
`font_02_sfnt_off00009b88.bin` `a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9B88	4324 bytes

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