PDF malware analysis — malicious · 03c01fd6c0ab3443

MALICIOUS

PDF

38.6 KB Created: 2020-04-07 12:04:56 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)

MD5: 2e1a612d000cfa8a027446d274b55b4a SHA-1: 55237b997212aa54e31fcd9e258fdbb1a4c086f6 SHA-256: 03c01fd6c0ab344365f9a78a524d5294d5af4f2e7c258acf0433bb0d1245e6ac

136 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of external links, many of which point to other PDF files with numeric slugs, suggesting a link farm designed for SEO manipulation. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates that the document likely instructs users to open a password-protected archive, a common tactic to bypass gateway security. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

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.
Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE

Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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://spacecreationdesign.com/uploads/1/3/0/5/130541186/130541186.html#como+imprimir+la+nueva+curp+a+color+verde+2018
- http://desatascosgranollers.org/uploads/1/3/0/4/130483879/8275297.pdf
- http://diamondlandscapescolorado.com/uploads/1/3/0/6/130621713/7231431.pdf
- http://deitzlandsurveying.com/uploads/1/3/0/2/130270996/tufok_wamogaba_zosazojewopatus.pdf
- http://thetruthdesign.com/uploads/1/3/0/6/130622095/feriwapokipewev-votumudinuxuxe-posoxevaperewa.pdf
- http://alextdesign.com/uploads/1/3/0/6/130620840/fesotemeda.pdf
- http://onepoint6north.com/uploads/1/3/0/6/130640031/5c48404ee5a.pdf
- http://cstwholesalersinc.com/uploads/1/3/0/8/130873915/zesof.pdf
- http://investmentlogistics.net/uploads/1/3/0/6/130620172/4288615.pdf
- http://whistlerlodging.co/uploads/1/3/0/3/130313459/6eb2eb783.pdf
- http://herohomeassist.com/uploads/1/3/0/5/130538816/ginum.pdf
- http://falulapeacock.com/uploads/1/3/0/6/130621071/xatuguvixagu.pdf
- http://sodanalytics.com/uploads/1/3/0/7/130740376/famedarififan.pdf
- http://skygrovewellness.com/uploads/1/3/0/2/130288523/nedusodapinazo.pdf
- http://womentakingitback.com/uploads/1/3/0/9/130969432/4619573.pdf
- http://theopossumspouch.com/uploads/1/3/0/9/130969469/biposunapon.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_off00006a9e.bin` `58dceb0080eb7a2c5b001a9d24467bb3643c64f9934e7a69ca055444aa118a61`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6A9E	9072 bytes

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