PDF malware analysis — malicious · 744e3b4f8bab2b0b

MALICIOUS

PDF

112.0 KB Created: 2021-04-05 09:41:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 971334832e7a43c6ea717a93a00a76f1 SHA-1: b166d720fa6a4caf7df759f11dd8142f873ce01a SHA-256: 744e3b4f8bab2b0bc8ee4a6a7f65c719359650975542d65cfca70afb606fbf50

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous external links, with a significant portion identified as a link farm designed to manipulate search engine results. The primary URL, 'https://seumenha.ru/award?keyword=bhagavad+gita+chapter+1+telugu+pdf', is presented as a search result, indicating a phishing or scam attempt. ClamAV detection and ML classification further support its malicious nature, classifying it as a phishing trojan.

Machine Learning

Nyx PDF Classifier malicious score 0.9976

Heuristics 5

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.
ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
External URI info PDF_URI

PDF contains an external URL action
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://seumenha.ru/award?keyword=bhagavad+gita+chapter+1+telugu+pdf
- http://wofonefa.iblogger.org/62477939871.pdf
- https://doxiviju.weebly.com/uploads/1/3/2/3/132302912/c4957ba.pdf
- https://mivixotagu.weebly.com/uploads/1/3/1/3/131384173/tuxerukidujemo_xalifafajegub_bijubivag_bupofiz.pdf
- https://suwudaxodorepe.weebly.com/uploads/1/3/4/8/134885248/5696827.pdf
- https://nodifolosorak.weebly.com/uploads/1/3/4/7/134758422/4813418.pdf
- https://xasotuda.weebly.com/uploads/1/3/4/2/134235861/jobegub_kivokubojal_lobuluro.pdf
- http://fedorahosted.org/lohit
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://6bb2b61b-82bf-473b-8365-63ddb02ddbdd.filesusr.com/ugd/d55797_3de8b06b9af34f9fa7c93184b0633050.pdf?index=true
- https://4eb3a9b5-ca6a-4b2a-896e-878abc754f3b.filesusr.com/ugd/f1ab86_b9bf141f915943cca0ebc73045b9f63c.pdf?index=true
- https://ad843f61-c544-48d7-8cfb-3c048b9edb46.filesusr.com/ugd/0dd9ed_b352c63af82c46b6bdb22a6a7701d890.pdf?index=true
- https://cf176ec6-4820-456b-adf9-61e5f06c968f.filesusr.com/ugd/43d598_6507eb36977c4c15ad2e3509109ac0b1.pdf?index=true
- http://sakonolib.rf.gd/diferencia_entre_conjuntivitis_viral_y_bacteriana.pdf
- https://9e1e9198-0fe7-4103-8084-fdcc6befb8d5.filesusr.com/ugd/2f7815_b894038916fc4a8796d1ca79ef056320.pdf?index=true
- https://b7af6bb9-01eb-4839-ab56-764651de4344.filesusr.com/ugd/2486b5_92fde2e6608c4d44a76752bc7eb2b452.pdf?index=true
- https://08c3cc13-1ce0-4add-927e-a3aed263473e.filesusr.com/ugd/ccf397_9e4918dcfb954168a4c513ded2060948.pdf?index=true
- https://b3695a61-a5b7-457a-863f-99677d03e0cc.filesusr.com/ugd/f2a82d_35d1c835485d4db18131bfc5ae8266c2.pdf?index=true
- https://9dd02728-8b0e-4c16-8a5b-31b14a6ec887.filesusr.com/ugd/d8c3ed_e5ad4efe3d7f4a8281ac8d58ee89b353.pdf?index=true
- https://0793e221-2e7e-4176-aae8-4ff4b75d8f7a.filesusr.com/ugd/64bd79_44709278d54b49b590a1ab3266aa6be3.pdf?index=true
- https://7162f0c1-3bb2-4775-9ad2-1e34613fb889.filesusr.com/ugd/595093_80856664f63a49ef862a5308a8ca18ab.pdf?index=true
- http://volomuladifute.rf.gd/true_freezer_t-49-hc.pdf
- http://zawopomosegasax.rf.gd/arch_linux_android_sdk_path.pdf
- http://xadamun.epizy.com/95267756225.pdf
- https://d85b1738-a471-4043-b59e-116b2bb794a3.filesusr.com/ugd/97927e_c931235b85ce4fd7973024b5f13dfe7a.pdf?index=true
- https://c38d9960-f3a4-46a0-b266-cfc7836dd0ed.filesusr.com/ugd/a8d9c8_0af2b934e880425281f7a2a511d8159f.pdf?index=true
- https://a815f367-2516-4b88-9496-eed07d5c1eb7.filesusr.com/ugd/665c20_73bdd9cea783445983f3ae11a80aeb39.pdf?index=true
- https://52468903-0e2d-47c5-babb-61e1d305d291.filesusr.com/ugd/32777b_710b8a48d50245b7aaa65502ee967537.pdf?index=true
- 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

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_005_off000178f3.bin` `a821a475b7aab50dcff74ab1a21360b37eef9217e5a130b6c08026bd0822aa2c`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x178F3	18348 bytes
`font_00_sfnt_off000135bf.bin` `b4655a3c283de5a07fa5cf515c8a19a3e0a6e6234584630ce5d5f3c35ffc5400`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x135BF	5400 bytes
`font_01_sfnt_off0001482b.bin` `40ef96da86b6123d577d475be460de15c41b9ca7393a8e650be4e9942aa3c64b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1482B	3720 bytes
`font_02_sfnt_off0001538d.bin` `6198a73b2faeaff30fd8fed6938486f3248483f50d0223dd9d357f55a0760a1a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1538D	12008 bytes

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