PDF malware analysis — malicious · 0d8146dea4027e38

MALICIOUS

PDF

57.6 KB Created: 2020-08-31 06:32:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 94e728d1d22c4ebdb137ccee3e318c01 SHA-1: 23a4cc89a63aa9f6ebc305144225d0fa7ca7761e SHA-256: 0d8146dea4027e3895cd47bf859f52ed701e5031bb4e68ffd61d29dd5bf9af81

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, appears to contain a search query related to health, suggesting a phishing or scam lure. The presence of numerous external PDF links further indicates a link farm or redirection strategy.

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.com/wix?keyword=what+damage+does+herpes+do+to+the+bo
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/b88e3d_5c5820d4794f4fc6b4cca0dcd06e7a2c.pdf
- https://static.usrfiles.com/ugd/3bcfef_c8a0bb03703f4cf29452bc095ca19ee5.pdf
- https://static.usrfiles.com/ugd/7ef0dc_061483e34bbb4545b95748aa5b86010e.pdf
- https://static.usrfiles.com/ugd/b8c837_574478db8c164d8684529770df75ca34.pdf
- https://static.usrfiles.com/ugd/c3548c_cca611a76be447aca2bb71fcebd992c8.pdf
- https://static.usrfiles.com/ugd/b8c837_7eceea9b7583450080bd437e401494f7.pdf
- https://static.usrfiles.com/ugd/36f25b_7e5851c03d554e8890d05364fe0ebf41.pdf
- https://static.usrfiles.com/ugd/cbdbb6_22bdcad0221f480b936a8778245ebce0.pdf
- https://static.usrfiles.com/ugd/4b68be_a827a5e321b1479fb7d1fe1a9f64cb34.pdf
- https://cdn.shopify.com/s/files/1/0466/5858/4741/files/manual_de_instalaciones_electricas.pdf
- https://cdn.shopify.com/s/files/1/0434/1720/6946/files/cibc_annual_report_2020.pdf
- https://cdn.shopify.com/s/files/1/0431/6479/5044/files/cambridge_c1_exam_practice.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000a17d.bin` `6a96e280991e384771f5f3a36956203ad3b8431659c174b247fa661ec55761c6`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA17D	5492 bytes
`font_01_sfnt_off0000b413.bin` `6776e6141e1d6607bd89bb3e21ea4467b9768de06cb1a67eb07df4ec534c5f61`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB413	10956 bytes

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