PDF malware analysis — malicious · 3ff831a841881d2a

MALICIOUS

PDF

67.6 KB Created: 2021-01-04 09:57:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16

MD5: d690eb002bfae9ec755a33150c69292d SHA-1: f9b06d72c3e85b788ed2ad13dccde8beb7f37142 SHA-256: 3ff831a841881d2a527f6ef10773abdb2f413a03f6c726c91c2131a1d0c32c27

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains heuristics indicating it is part of a link farm and includes an external URI pointing to a suspicious domain. The document body, though heavily obfuscated, suggests a lure related to downloading software. The presence of numerous external links, many pointing to S3 buckets, suggests an attempt to distribute malicious content or engage in SEO manipulation for phishing purposes.

Machine Learning

Nyx PDF Classifier malicious score 0.8706

Heuristics 3

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
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://trafftec.ru/aws?utm_term=eclipse+jee++64+bit+zip PDF link annotation
- https://xesinuvukuwufo.weebly.com/uploads/1/3/0/7/130776104/c60a88141.pdfIn PDF document text
- https://pibiwija.weebly.com/uploads/1/3/4/8/134896476/wodogaxative.pdfIn PDF document text
- https://mekuxiwefajup.weebly.com/uploads/1/3/0/7/130739023/2077263.pdfIn PDF document text
- https://mizemetugez.weebly.com/uploads/1/3/4/3/134322353/gitaguragideki.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4376098/normal_5fd64d8d5792b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4370064/normal_5fa92b12083f0.pdfIn PDF document text
- https://gudogetoji.weebly.com/uploads/1/3/4/6/134634169/folod-rotememixat-tipawifu-givimital.pdfIn PDF document text
- https://jufukakoxojopop.weebly.com/uploads/1/3/4/3/134317893/7120742.pdfIn PDF document text
- https://nefenupenarus.weebly.com/uploads/1/3/4/4/134476068/3851543.pdfIn PDF document text
- https://zerimesatevig.weebly.com/uploads/1/3/4/8/134879836/sugopiniwajigoruwe.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/wazorixekunafob/9994346434.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/00c77dda-6faf-4790-9db5-32045aa7f5dd/toro_super_recycler_manual.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/97d50736-f60a-4acc-aebc-38f60558b1a8/25121207549.pdfIn PDF document text
- https://s3.amazonaws.com/bisiku/vavusamuwosogivulela.pdfIn PDF document text
- https://s3.amazonaws.com/joterige/kesulusibujepilumipugotuk.pdfIn PDF document text
- https://s3.amazonaws.com/welutizenop/texas_driving_manual_2019.pdfIn PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e05e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE05E	5084 bytes
SHA-256: `9f4606e2e71013e9c92c32d94f241b5d10bc2a11507cb82d2badc85b2406d429`
`font_01_sfnt_off0000f1d5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF1D5	10516 bytes
SHA-256: `31283bf8cde5daee97308a11de15e7138d6a8f14b28dc2cca0072dcb892f5727`

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