PDF malware analysis — malicious · a030cb116db65a90

MALICIOUS

PDF

36.1 KB Created: 2020-06-03 19:44:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: d4d71ef7769529ddb93a3f061abd240b SHA-1: e0b2104911a399549080d17eee0b20d82c28718b SHA-256: a030cb116db65a9028ec1533bfd2c7875884b6ed73bc8960217e0b16b3168296

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The primary URL found in the document body, http://carmelbayplaceholder.devsite-1.com/uploads/1/3/0/7/130776103/130776103.html#bagas31+windows+10, suggests a lure related to Windows 10. The ML classifier also strongly indicated maliciousness. The presence of a link farm points towards SEO abuse or a distribution point for further malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

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://carmelbayplaceholder.devsite-1.com/uploads/1/3/0/7/130776103/130776103.html#bagas31+windows+10
- http://valchromatfurniture.com/uploads/1/3/0/5/130550993/putosopina.pdf
- http://mcwhorterprogear.com/uploads/1/3/0/4/130488512/5e344.pdf
- http://crockersgrill.com/uploads/1/3/0/9/130969616/1214562.pdf
- http://hostmaster.muchmalarkeymanor.co.uk/uploads/1/3/1/1/131164273/4613141.pdf
- http://zmaille.com/uploads/1/3/0/5/130588905/tupikunusimulo.pdf
- http://redvoxsound.net/uploads/1/3/0/2/130270923/lexabinowafex_fusiwob_poninonapane_buvufufeleri.pdf
- http://carmelbayplaceholder.devsite-1.com/uploads/1/3/0/7/130776103/terms.html
- http://carmelbayplaceholder.devsite-1.com/uploads/1/3/0/7/130776103/dmca.html
- http://carmelbayplaceholder.devsite-1.com/uploads/1/3/0/7/130776103/policy.html
- https://kaxatesuv.files.wordpress.com/2020/05/86781888665.pdf
- https://jebozus.files.wordpress.com/2020/05/vudunokulavonuriwivop.pdf
- https://zefatinu.files.wordpress.com/2020/05/76668330356.pdf
- https://sozitelovi.files.wordpress.com/2020/06/92318314754.pdf
- https://gosivev.files.wordpress.com/2020/05/80984040354.pdf
- https://likabizev485265161.files.wordpress.com/2020/06/16842985491.pdf
- https://nirakopifaz.files.wordpress.com/2020/06/birigupopawadiwafazamukud.pdf
- https://nizunovomofu.files.wordpress.com/2020/06/zaket.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/

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00006117.bin` `78220cd4247e2870764a11f7b583f2fbea4f0aabf66b8941100c36b4b265804c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6117	10472 bytes

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