PDF malware analysis — malicious · 91b19f146508e3a1

MALICIOUS

PDF

38.1 KB Created: 2020-11-09 00:55:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a93a91a35fc40c814f81e61ca2541da3 SHA-1: d69cf458f77c64cfab17db41e2c673639aeedc5e SHA-256: 91b19f146508e3a108ccd9c7bfaff067394e899228151ac5183efbb24c4c77af

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a heuristic firing for a link farm, suggesting it's designed to host or link to numerous other documents. The embedded URL `https://trafficel.ru/123?keyword=apartments+by+doss+high+school+louisville+ky` appears to be a lure, potentially leading to a malicious download or phishing attempt. While no scripts were explicitly extracted, the PDF structure and the presence of numerous external links, including one pointing to a potentially malicious domain, indicate a malicious intent to redirect users.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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.
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://trafficel.ru/123?keyword=apartments+by+doss+high+school+louisville+ky
- https://defagetomorig.weebly.com/uploads/1/3/4/5/134576552/27c9f9539.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/leguvefu/bob_shanghai_66.pdf
- https://gunefem.files.wordpress.com/2020/11/campbell_biology_11th_edition_free_download_reddit.pdf
- https://s3.amazonaws.com/bidurudilidujug/fairy_tail_measurements.pdf
- https://s3.amazonaws.com/xezonijida/cursive_alphabet_fonts_free.pdf
- https://mudupetem.files.wordpress.com/2020/11/dalezaxafinaje.pdf
- https://s3.amazonaws.com/xanebavifamopez/waxuwusufetepu.pdf
- https://s3.amazonaws.com/sugosubexez/carte_du_monde_avec_tout_les_pays.pdf
- https://uploads.strikinglycdn.com/files/631deb67-f955-472a-8cef-ab546077fc2a/nibofuluf.pdf
- https://s3.amazonaws.com/zaxuledo/lanorolikovefumuwuvafebe.pdf
- https://s3.amazonaws.com/jotizifime/segotudadipikarusapo.pdf
- https://s3.amazonaws.com/megelugik/odisha_state_map.pdf
- https://filunimutaxo.files.wordpress.com/2020/11/baywatch_full_movie_download_in_tamil_tamilrockers.pdf
- https://uploads.strikinglycdn.com/files/ef28e8aa-7939-44e8-a30b-3a952bc8e4e1/ruwijozasosuvubarax.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_off00005316.bin` `d87dadef8fdaa1e68ef12dc2a4609a502cf7431fe4a325270e586596e6eb3646`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5316	5844 bytes
`font_01_sfnt_off000066db.bin` `2a1361f31e725a5249b5bdb044d5a9ae970e3c8912cb518ce4730b6641397bf4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x66DB	10852 bytes

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