PDF malware analysis — malicious · 7a13dd4b34a6fb1c

MALICIOUS

PDF

38.9 KB Created: 2020-09-04 14:26:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 5111b30977dde6743330e8897188617a SHA-1: 5b707d5505e61a043789b4706bb0aca3956c7efa SHA-256: 7a13dd4b34a6fb1c489d373d6a033d448d03a28d63213199203ac0a8c9bf7b20

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains a link farm with 26 external PDF links, one of which is a known malicious redirector. The document body, though heavily obfuscated, contains the URL that leads to the malicious redirector. This suggests an attempt to lure users to malicious infrastructure under the guise of providing a datasheet.

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=sma+stp+5kw+inverter+datasheet
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/b8c837_62ed7c86f51f40f9bb87f3ded3b0521a.pdf
- https://static.usrfiles.com/ugd/b8c837_97f37fc9c1784e3aadce6cbab6f40feb.pdf
- https://static.usrfiles.com/ugd/b8c837_cf663ef75b884e2ba445f1a2d681b5c6.pdf
- https://static.usrfiles.com/ugd/a467d2_441caed4e3764e2a9bf7c79334e04559.pdf
- https://static.usrfiles.com/ugd/804ff6_70bde35ccf9149a68bb501b4b388a468.pdf
- https://static.usrfiles.com/ugd/d6b5da_ff13d35a65dc4e3daa762a78ac5d8c53.pdf
- https://static.usrfiles.com/ugd/01e791_d3bc8446bad54614893b1a051e19b38e.pdf
- https://static.usrfiles.com/ugd/b8c837_50dd207bfee7435e9a2ca0d5fbc1986b.pdf
- https://static.usrfiles.com/ugd/a2c2bc_6ed258b7ef3c462c87892b2137bcba82.pdf
- https://static.usrfiles.com/ugd/71fd01_ff2b98f403d240108150b0a8fe86e628.pdf
- https://static.usrfiles.com/ugd/b8c837_3287f6c608f146e5b9d64f30e8c8d0a0.pdf
- https://static.usrfiles.com/ugd/bd7df1_826373e67f0f488980cff33297bd062a.pdf
- https://static.usrfiles.com/ugd/865d50_2f23bc1e7bea49d6a221595e99bae383.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_off00005984.bin` `f649fe7db83f8b0cf32e527887423737dfce2f4b12fe6e950cf7da6cc2db61a5`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5984	5608 bytes
`font_01_sfnt_off00006c85.bin` `4277bbffdb7e5ecb95db8e217331fb7e33e42ecb426f86f07bfe8e0aa6d82327`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6C85	10012 bytes

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