PDF malware analysis — malicious · 9e28ce2132ea26f2

MALICIOUS

PDF

44.4 KB Created: 2020-03-09 10:00:39 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)

MD5: eb66fb0a9125d133e28ee938027b0baa SHA-1: 7054a84f36e491bad61c66800e8b3f3478dea4a7 SHA-256: 9e28ce2132ea26f2bb9309e53047e007e220e79a18c3d2468964855b6dd0c48b

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links, many of which point to other PDF files hosted on different domains. This behavior is indicative of a link farm or SEO poisoning attack, designed to drive traffic or distribute malicious content. The ML classifier strongly flagged this PDF as malicious, supporting the suspicious nature of the embedded links.

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://kyflowernseed.com/uploads/1/3/0/2/130289595/130289595.html#cafeteira+dolce+gusto+genio+110v
- http://rhphire.com/uploads/1/3/0/6/130640003/dalufu.pdf
- http://skylinedc.org/uploads/1/3/0/8/130873818/repuwujiro-duxalur.pdf
- http://skillboxconstruction.com/uploads/1/3/0/7/130739962/d4af405c3104b0.pdf
- http://millie4good.org/uploads/1/3/0/4/130491488/23f78d3.pdf
- http://www.anesaspeaks.com/uploads/1/3/0/8/130814346/64768a60.pdf
- http://www.nocompromisecustoms.com/uploads/1/3/0/3/130323374/cb0173.pdf
- http://atribecalledhern.com/uploads/1/3/0/6/130639803/2886380.pdf
- http://openradio.es/uploads/1/3/0/2/130272458/wufetubejomuvuso.pdf
- http://wentcruising.com/uploads/1/3/0/6/130620772/78747b5e4a2.pdf
- http://scalefreenetworks.com/uploads/1/3/0/3/130313553/500fb.pdf
- http://leslieelizabethdesign.com/uploads/1/3/0/5/130588899/410139.pdf
- http://gadaboutplaces.com/uploads/1/3/0/4/130488544/ripijisi-talegizup-runovo-xabasimubezur.pdf
- http://lotusmobiledetailing.ca/uploads/1/3/0/4/130476389/xupiwinewewomare.pdf
- http://www.disior.co/uploads/1/3/0/8/130874095/3404839.pdf
- http://riverfrontroyale.com/uploads/1/3/0/3/130324270/38cfd9cf2d868.pdf
- http://captreefishingboat.com/uploads/1/3/0/3/130323421/3467229.pdf
- http://mrbluespark.com/uploads/1/3/0/5/130541733/wamagalugipu.pdf
- http://haulinoatslogistics.com/uploads/1/3/0/6/130620881/5632850.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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000765d.bin` `ac3be3987d200b0d1ff38679bce6e24bf6059352eb835e503645a3673ea0ce4b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x765D	10560 bytes
`font_01_sfnt_off00009903.bin` `e91619dfd4c72a85464d95ef1ba4e67df13020651c42071bafbe521a61d9f7fc`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9903	2652 bytes

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