PDF malware analysis — malicious · 5f889f645ab6f553

MALICIOUS

PDF

42.1 KB Created: 2020-04-09 07:32:11 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)

MD5: bf99280d49e0442a3bbca95e31b0135a SHA-1: 78dd698675c85b607c12142bb9dde8831a6b7f24 SHA-256: 5f889f645ab6f5532d7731e2dd561b47a6ed3d5be1b1eb8a19d16d302e620c4f

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, identified by the 'PDF_SEO_LINK_FARM' heuristic, suggesting a link farm or redirection to potentially malicious sites. The ML classifier also strongly indicated maliciousness. The embedded document body text, though partially corrupted, contains a title related to unit conversion and mentions wkhtmltopdf, indicating it was likely generated programmatically rather than being a user-authored document.

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 http://gardensofdivinehope.net/uploads/1/3/0/7/130776125/130776125.html#convers%C3%A3o+de+mm+para+cm2
- http://synchronicitywerks.com/uploads/1/3/0/2/130272420/7002674.pdf
- http://beckysdiner.net/uploads/1/3/0/7/130738875/jaxomedivede-budeb-fogexawubevob.pdf
- http://lavishlylashedparislauren.net/uploads/1/3/0/9/130969592/dcb908.pdf
- http://jamesmower.com/uploads/1/3/1/3/131379737/1d3647fc57dc.pdf
- http://ikeptmybaby.org/uploads/1/3/1/4/131406569/giretomew_wuneneriwan_difotowosidisi_wazifixesomuti.pdf
- http://mercyportraitart.com/uploads/1/3/0/9/130968993/c126c96d8ae.pdf
- http://buenomiele.com/uploads/1/3/0/7/130739012/d9c1b59d.pdf
- http://library.ontariooregon.org/uploads/1/3/0/6/130604981/xuguvukisor-zawogekoxekad.pdf
- http://northshoreshannon.com/uploads/1/3/0/6/130604785/d6bb692a.pdf
- http://advisorsonly.com/uploads/1/3/0/2/130289620/1059193.pdf
- http://bradleyspc.com/uploads/1/3/0/2/130289620/wuxaregi_fovavumupaboza.pdf
- http://woodfinreserve.com/uploads/1/3/1/4/131483305/fewedidis.pdf
- http://firstnationalinvestment.com/uploads/1/3/1/1/131163896/tojad_melefefutafe.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- 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/
- https://fedoraproject.org/wiki/Licensing/LiberationFontLicense

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00006ebd.bin` `4d0b28fe864ba6161d5ca0fe8e46cda3415fa6950e517a4f1ad653da1cd6b371`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6EBD	9708 bytes
`font_01_sfnt_off00008fd5.bin` `cf2338b7895a3a873add1db7dfb411390262a2a3d24e5b3dccff59843624ea97`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8FD5	2704 bytes

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