PDF malware analysis — malicious · e3b5adccf844f06c

MALICIOUS

PDF

71.2 KB Created: 2021-03-27 20:37:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24

MD5: db81221aa1b0a167eb3a150db8bd2c34 SHA-1: 2ee5c9d482f64adf059bfff7b4413e4963d8c369 SHA-256: e3b5adccf844f06cfbed2414842906e7983668cc8cbc71f1a026bc23d5b4d1b6

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains multiple embedded URLs, with one specifically pointing to 'fokemale.ru' and disguised as a search result for educational materials. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the presence of numerous external links suggests an attempt to redirect the user to malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9996

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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 https://fokemale.ru/award?keyword=arabic+alphabet+worksheets+for+beginners+pdf PDF link annotation
- https://fibusoza.weebly.com/uploads/1/3/0/7/130775704/fawufopesologuse.pdfIn PDF document text
- https://vowipolijej.weebly.com/uploads/1/3/4/7/134713390/88ad1.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4491688/normal_605b74e385324.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4489740/normal_5fceb154b2958.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4490757/normal_5fc8dcd2031da.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4488815/normal_60555d9083d13.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4492259/normal_5ffff13e34893.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4388421/normal_600bb677b4dac.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4386333/normal_5fe173b5b572e.pdfIn PDF document text
- https://soridafufunet.weebly.com/uploads/1/3/5/3/135308698/wazezapibaxukubor.pdfIn PDF document text
- https://felabare.weebly.com/uploads/1/3/0/7/130776415/0343863fff.pdfIn PDF document text
- https://gegixigozazewit.weebly.com/uploads/1/3/4/8/134858275/2688364.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4366302/normal_5ffdb9f1042a1.pdfIn PDF document text
- https://boxotegiperofog.weebly.com/uploads/1/3/1/3/131398000/5210890.pdfIn PDF document text
- https://totobulamu.weebly.com/uploads/1/3/4/3/134310137/9243588.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://s3.amazonaws.com/kezemiradigu/visoresumekudobapanax.pdfIn PDF document text
- https://c78267de-509c-4cb0-9394-6b21b7876e04.filesusr.com/ugd/290ce3_7e77c9bd0c5c48c3b98273399823b974.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/migivewuwe/cinemavilla_charlie_malayalam_movie.pdfIn PDF document text
- https://s3.amazonaws.com/sajezife/suffix_worksheet_grade_4.pdfIn PDF document text
- https://s3.amazonaws.com/zukogi/kinemabogedapojifoxibi.pdfIn PDF document text
- https://8ed7b8cb-9bae-4def-ad9b-66b28cd11f91.filesusr.com/ugd/740d8c_560b6e3c08fc412aae194fda8ad1797d.pdf?index=trueIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000cb99.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCB99	5488 bytes
SHA-256: `6b9e93fc956411fa5413f8322678f74748e225574d348834765e468b1e8594a3`
`font_01_sfnt_off0000de3b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDE3B	10176 bytes
SHA-256: `15a646f1ee02db5253b734d0860b1debcac1f1af866d1f8f9316d613001be0f3`
`font_02_sfnt_off0001011a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1011A	4324 bytes
SHA-256: `d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378`

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