PDF malware analysis — malicious · 635e778ffbfca8c8

MALICIOUS

PDF

59.9 KB Created: 2020-08-05 06:55:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 7a212ab38f9c7ac3c3443cb50e510c45 SHA-1: a77f73206ee032e53cb7fbf88ba5c869c0282fdc SHA-256: 635e778ffbfca8c810bd061cb3647df871e8df37c24cd73717fc270f7ab089b5

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though partially corrupted, contains text related to 'Atal bihari vajpayee poems pdf free download' and the malicious URL, suggesting a lure for users seeking content. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the presence of a link to known malicious infrastructure, and 'PDF_SEO_LINK_FARM' indicates a large number of external links, likely for SEO manipulation or distributing further malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9968

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.
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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.com/pify?keyword=atal+bihari+vajpayee+poems+pdf+free+download
- http://files.zevkali.com/uploads/1/3/1/4/131454355/eb8fb6dd15b0b6.pdf
- http://files.mutationpennants.com/uploads/1/3/1/4/131453384/subomuzoxob_lomasiteta_tikov.pdf
- http://files.ilanitovadya.com/uploads/1/3/1/0/131069899/mazipetugarezu.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://fedorahosted.org/lohit
- http://smc.org.in)MeeraRegularMeera2016SMC7.0.0+20171102Hussain
- http://smc.org.inhttp://smc.org.in
- http://www.indictrans.org
- https://cdn.shopify.com/s/files/1/0431/1715/0368/files/jokejepirijen.pdf
- https://cdn.shopify.com/s/files/1/0428/4517/5971/files/total_number_of_countries_in_the_world_with_capitals.pdf
- https://cdn.shopify.com/s/files/1/0437/0982/5176/files/41580352374.pdf
- https://cdn.shopify.com/s/files/1/0429/9931/6639/files/dinikiniruzugaferikoji.pdf
- https://cdn.shopify.com/s/files/1/0429/1392/3228/files/windows_madia_player_9.pdf
- https://cdn.shopify.com/s/files/1/0429/8371/9071/files/determination_of_carbohydrate_by_anthrone_method.pdf
- https://cdn.shopify.com/s/files/1/0431/5152/4008/files/2583438175.pdf
- https://cdn.shopify.com/s/files/1/0433/2109/8408/files/the_voice_of_the_silence_helena_blavatsky.pdf
- https://cdn.shopify.com/s/files/1/0428/5631/7091/files/mupitijopo.pdf
- https://cdn.shopify.com/s/files/1/0437/5438/9665/files/lilewururuk.pdf
- https://cdn.shopify.com/s/files/1/0431/4886/9786/files/army_ranks_in_pakistan.pdf
- https://cdn.shopify.com/s/files/1/0432/9714/4990/files/79320352597.pdf
- https://cdn.shopify.com/s/files/1/0435/3182/9412/files/38422297684.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/
- http://scripts.sil.org/OFL
- http://www.geocities.com/mitra_anirban/hobbies.htmGNU
- http://www.gnu.org/copyleft/gpl.htmRegular
- https://gitlab.com/smc/meera/blob/master/COPYING

Extracted artifacts 9

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000547a.bin` `3eaca352dcdc99fb0140a7806182c2d6e7293d462871e8f2b5e302eb70fc4104`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x547A	5740 bytes
`font_01_sfnt_off000067e6.bin` `c206ac4eca120f096112d408dff6b33a2f721090936d80486df636e1cd240fde`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x67E6	2656 bytes
`font_02_sfnt_off000072ea.bin` `fbdd9df555c8710fa493947bde41d1b30e4b750f457ece442df516a7dd53c510`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x72EA	4140 bytes
`font_03_sfnt_off00008006.bin` `4bb619f7e4c8d10c6650d66271e6db770d7def95493d885be3efe54e7c100c22`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8006	3048 bytes
`font_04_sfnt_off00008c14.bin` `3702365b3034b9d7945da23b991b5e2ac3f8bb06d1ba3be7e5ba1b5d8dd48c9f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8C14	2328 bytes
`font_05_sfnt_off000096cb.bin` `e66bd646ff29f48b94a898642357a1d5295b77faffa0bd70eb77acb4aebc9a97`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x96CB	2108 bytes
`font_06_sfnt_off0000a0a0.bin` `87016e8933cc862d1d188edfbee698abcff8178ed3d6b510b61737ee02f60284`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA0A0	4336 bytes
`font_07_sfnt_off0000ae41.bin` `ec922b8092d232e9f9be41bda564b59d734fbf56105fa141ed6299b8a2099bbb`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAE41	10564 bytes
`font_08_sfnt_off0000d2a8.bin` `b68734debb3d40cb8f9f4d92da8c1dbe9e7e329ada5ac4cff3af735d6ad98e60`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD2A8	3224 bytes

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