PDF malware analysis — malicious · 64073281697f27d6

MALICIOUS

PDF

36.8 KB Created: 2020-09-02 21:45:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: dc936a1182a9e165aa38abc6ed240906 SHA-1: 602aa2f3bec95bee16d1d27f3a9695d2ccfa3e68 SHA-256: 64073281697f27d6f05c2214499b83cd3ba65be20bee48afbac35c5e2a5429ff

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, including one identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'double genitive exercises' and the malicious URL, suggesting a lure to disguise the malicious intent. The ML classifier also strongly indicated maliciousness.

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.link/wix?keyword=double+genitive+exercises+with+answers
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/b8c837_da641bfb739c4c13890db8ffbc1f5b1d.pdf
- https://static.usrfiles.com/ugd/b8c837_0eb317c6c08c4944bd06ab3bc6abdd0e.pdf
- https://static.usrfiles.com/ugd/99a8f2_21ecab0444de43329c82ef1e2edfcf86.pdf
- https://static.usrfiles.com/ugd/a2d007_376fc64ba09b4ff2b7b47b506858ed51.pdf
- https://static.usrfiles.com/ugd/b0c717_d0abed5be4ad4f12b9ae8e5c8a2c808b.pdf
- https://static.usrfiles.com/ugd/6846fe_4a5ab0bbddbc4484ac4a262b21514a27.pdf
- https://static.usrfiles.com/ugd/5ea691_bb62358c7dc1443fb6c0343746e4738c.pdf
- https://static.usrfiles.com/ugd/db80c5_af4a07bc7c814a778d3d42e6d187989d.pdf
- https://static.usrfiles.com/ugd/5e8de6_aaef2041fc474fc2b23fcfbb0723d842.pdf
- https://static.usrfiles.com/ugd/c33f71_b5d67a74032d4444ac40e8238cf1cdb6.pdf
- https://static.usrfiles.com/ugd/b8c837_0d3b63bcdbf74a9598dfa35d38f729b7.pdf
- https://static.usrfiles.com/ugd/3f80ec_6fb775bc6f3a40c68143b2827d137ca6.pdf
- https://static.usrfiles.com/ugd/5e8de6_67363cac77604e81b800d056d29f7b6b.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_off00005129.bin` `aa57d826ff526305795f3dbd3aba4a48644082570dfecc761740c75a730ae87f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5129	5420 bytes
`font_01_sfnt_off000063b2.bin` `899aaf1fea6461cfc5866ccca6d73e2e89ed5fd9ec4ff671d989b6f26a39c7c9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x63B2	10260 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.