PDF malware analysis — malicious · eac98b80373e5f73

MALICIOUS

PDF

55.3 KB Created: 2020-08-24 14:38:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 12895e81f50a41ffac6626d66757c615 SHA-1: c90eafbf4607f49785d5fa00794322d84ab108d2 SHA-256: eac98b80373e5f7386d503d3ae547af10ceeeb199f9b1ba42eaeb8bb55f3bcf8

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, includes the same URL, suggesting a lure to trick users into clicking the malicious link. The presence of a link farm further indicates a malicious intent to distribute harmful content.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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.cc/pify?keyword=marathi+bhajan+song+apps
- http://files.habitatriwestbay.org/uploads/1/3/1/4/131407088/mopor.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lasuzopaxikabade.pdf
- https://cdn.shopify.com/s/files/1/0433/0012/6880/files/loan_automation_system.pdf
- https://cdn.shopify.com/s/files/1/0431/5460/4198/files/spoken_english_guru_download.pdf
- https://cdn.shopify.com/s/files/1/0435/2324/4191/files/sebiluzelavubaruza.pdf
- https://cdn.shopify.com/s/files/1/0430/6495/0946/files/xalojabepekugokexaka.pdf
- https://cdn.shopify.com/s/files/1/0434/1920/5789/files/hp_laserjet_p1005_driver.pdf
- https://cdn.shopify.com/s/files/1/0430/4440/5397/files/linopaxelotukimegisedig.pdf
- https://cdn.shopify.com/s/files/1/0433/0723/7531/files/17431505941.pdf
- https://cdn.shopify.com/s/files/1/0427/7692/0220/files/mtg_arena_crashing_on_startup.pdf
- https://cdn.shopify.com/s/files/1/0436/9612/8153/files/wafejewixufebibujosomak.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_off000088dd.bin` `3d9cef364549312606e67d171396c50ed2f23e23963144f2ca81c3c54aafe361`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x88DD	4940 bytes
`font_01_sfnt_off00009993.bin` `53d25a4c1f2928907f5cc66e47d2c2879b177bb9d1b4c7cdece46c290e35082b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9993	13028 bytes
`font_02_sfnt_off0000c2b1.bin` `cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC2B1	4324 bytes

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