PDF malware analysis — malicious · 8ffed2e86105fc7d

MALICIOUS

PDF

94.8 KB Created: 2020-12-22 19:46:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02

MD5: 6d184093a93cac5bf63f1d40ba55fd6e SHA-1: eeb3cf68348ac85787ab4b81b79059a17d9cf561 SHA-256: 8ffed2e86105fc7dcc6bf696759db845e51fbbc577a94903da4f248e08bcb9aa

214 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous embedded links, many of which point to known malicious redirectors and a link farm designed to distribute further malicious PDFs. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to malicious infrastructure.

Machine Learning

Nyx PDF Classifier malicious score 0.9996

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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.
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://traffmen.ru/aws?utm_term=carnot+theorem+pdf In PDF document text
- https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/18ad995.pdfIn PDF document text
- https://fevokokedu.weebly.com/uploads/1/3/4/5/134500062/820be.pdfIn PDF document text
- https://zapilututok.weebly.com/uploads/1/3/4/3/134341349/wiguz-fawox-tetove.pdfIn PDF document text
- https://xidalivukudupet.weebly.com/uploads/1/3/4/3/134319957/voxoxewafit.pdfIn PDF document text
- http://www.opentle.orgIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/tiniruru/90052390366.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/067c94cf-0967-4124-9b56-ca1d1361ea7a/new_x_men_omnibus.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/918fe007-d7d2-4f65-9b1f-521eb9d16152/48751190682.pdfIn PDF document text
- https://static1.squarespace.com/static/5fce44794a55824081a6f884/t/5fd649d313a48350e80ec465/1607879124042/62655238276.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/6fb07fae-e367-48b6-9649-f422b7066a04/license_branches_in_evansville_in.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/04de0a26-ac3b-4ecd-8667-6638d237b28b/silver_pothos_in_aquarium.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d4548734-f507-4c59-a5d1-0dbab4eb195c/french_alphabet_sound_chart.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/877a998d-1c87-451b-a5cd-a13e1771d939/sawogozatusavito.pdfIn PDF document text
- https://s3.amazonaws.com/dazemi/air_force_rank_and_pay_grade_chart.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1645a11f-ac45-4db5-9ec1-9c9e5715ab52/bloody_mary_folklore_real.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7b8b65c4-014d-4db2-bbca-da11b39e1327/pitogotimezekirafusafiso.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b734e36b-0293-49a2-be41-8a45190def34/fovorevojixuxu.pdfIn 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://www.gnu.org/licenses/gpl.htmlIn PDF document text
- http://scripts.sil.org/OFLIn PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off0000fe23.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0xFE23	17456 bytes
SHA-256: `9ef34521e69e0a5d1ac0cc76f30201c7e9377e5f2e8e4bae2ed4ad1a76083530`
`font_00_sfnt_off0000ed6d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xED6D	4976 bytes
SHA-256: `0d95d34720cad4745c1382f6375245a84453dc7f20526f701a37e044cadeaca3`
`font_02_sfnt_off00012d6c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12D6C	12704 bytes
SHA-256: `a93411e9be66d452c49b69ef6f02c6ca04e2c1172dee96e7a7f695f26e252003`
`font_03_sfnt_off00015886.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x15886	16120 bytes
SHA-256: `ace2d6ee7ebbb127550814a416220d0993bce841de2a73413674dfa7248bf29b`

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