PDF malware analysis — malicious · fc1fc8a022b47e9c

MALICIOUS

PDF

46.5 KB Created: 2020-10-26 11:31:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15

MD5: 7b5bb47ae380794602e977218ddf927c SHA-1: 3cb5813b79e8189aa8b3e30c0497c2c61e9d68ce SHA-256: fc1fc8a022b47e9c57ac7246282871bc9c730ce7f93ad1abf2d4dfe13fd85f04

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to suspicious domains and are likely part of a link farm designed to manipulate search engine results. One prominent URL, https://cctraff.ru/123?keyword=robertshaw+programmable+thermostat+manual, is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to these URLs, suggesting an attempt to drive traffic to malicious infrastructure.

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://cctraff.ru/123?keyword=robertshaw+programmable+thermostat+manual In PDF document text
- https://rugurujumififez.weebly.com/uploads/1/3/1/3/131384765/sawewi.pdfIn PDF document text
- https://daletutanedura.weebly.com/uploads/1/3/1/6/131636587/wiwosaserigige.pdfIn PDF document text
- https://luwamagol.weebly.com/uploads/1/3/4/3/134375262/sepopow.pdfIn PDF document text
- https://turomanusogagi.weebly.com/uploads/1/3/1/4/131453559/karodomimaferoguj.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4386593/normal_5f92054ee9dc4.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4380859/normal_5f95fb8a46c40.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4370302/normal_5f94f472d49f0.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4374198/normal_5f916fbbe5855.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4370303/normal_5f90175b4b13f.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://uploads.strikinglycdn.com/files/0e79000c-6ef9-4152-b224-df0d548763d7/wukejavadeduw.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c04105d8-3fe5-41ca-b3ea-fd0cd7874ca7/dalarewi.pdfIn PDF document text
- https://s3.amazonaws.com/mejifavo/bexikiveva.pdfIn PDF document text
- https://s3.amazonaws.com/lejivugeleguwod/85502597177.pdfIn PDF document text
- https://s3.amazonaws.com/lorifumofelu/24005350713.pdfIn PDF document text
- https://s3.amazonaws.com/lodazojamuva/rupujorowesivanedofagud.pdfIn PDF document text
- https://s3.amazonaws.com/fotojipifuzitul/sodiletuta.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1dc49790-3a30-4103-b5e9-d1daa7c58648/fegijegupefe.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7a28fec0-f482-45c5-8dff-ee4a77e8024c/4707132558.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/bec64bdf-7354-4fb8-a237-a1b6523c2461/woodsmith_flip_top_tool_stand.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/878c4659-de2f-4d8a-9c16-7152ae30f3df/bmat_2013_section_2_answers_explaine.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/6ee05839-971b-4c83-9ffb-d4301bccb8c9/lemulosanol.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/83d0b3db-a5cf-41a7-bdde-d8cfc0b28ff9/xezet.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/312f44c1-4228-4c03-982e-37456e426390/juwitezazobopojokarusi.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000069c1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x69C1	5308 bytes
SHA-256: `49cc6ae6564f7b5a1619ecec1e615f8ac4cf5c170e6a0bf74e4cc05c73190f01`
`font_01_sfnt_off00007bb4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7BB4	10056 bytes
SHA-256: `dfa1f884366929e713c63d9d404427d2e4238feb9229123279a92375e0cbc379`
`font_02_sfnt_off00009e3b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9E3B	4324 bytes
SHA-256: `0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333`

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