PDF malware analysis — malicious · ae02a70cde83e233

MALICIOUS

PDF

90.4 KB Created: 2020-10-25 09:09:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27

MD5: 1183a387c23d4e30fd428c3a1ffe833b SHA-1: 1f2f0781d73d4a891a30abd47eba39c27ac9b5f9 SHA-256: ae02a70cde83e2332040d9b9db40c69c8442961722247701366e9a093e81966a

162 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a malicious redirector link disguised as a novel download, which is a common social engineering tactic. The ML classifier strongly indicated maliciousness, and the PDF structure suggests it's designed to exploit vulnerabilities or redirect users to malicious sites. No scripts were extracted, but the presence of a malicious redirector and the ML detection are strong indicators of a phishing or exploit delivery attempt.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

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.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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://ttraff.link/123?keyword=latest+urdu+novels+download+pdf In PDF document text
- https://cdn-cms.f-static.net/uploads/4389090/normal_5f9231f726600.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4371790/normal_5f8f93192ff60.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4378378/normal_5f8e726912aa2.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369511/normal_5f94d7d0a5fbf.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4380223/normal_5f90ee67e71b6.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368244/normal_5f8b2000b6503.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4413012/normal_5f9496986d079.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4377400/normal_5f8db791cb0d4.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4380073/normal_5f8e20deac6b6.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366317/normal_5f90ac91bd9aa.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://cdn.shopify.com/s/files/1/0501/7003/6412/files/android_tv_raspberry_pi_3_iso.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/1825/5510/files/vivimovajuxiwo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0478/9177/5654/files/unodc_report_2020.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/69720679-d41d-4d8b-ae9e-f747467e2ef5/womujewaw.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/6e9ae7bf-ec81-42c7-993d-aaf358a8f15f/24895231800.pdfIn PDF document text
- https://s3.amazonaws.com/tarajix/burdah_busiri.pdfIn PDF document text
- https://s3.amazonaws.com/tadovu/15236071921.pdfIn PDF document text
- https://s3.amazonaws.com/wilugugo/95658403375.pdfIn PDF document text
- https://s3.amazonaws.com/roware/adobe_reader_password_protect_document.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/3437/6352/files/5545537480.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0484/8392/6171/files/fuwuxanejotuwegolinizigu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0482/4956/9434/files/raxubune.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://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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
`stream_006_off0001355b.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x1355B	21940 bytes
SHA-256: `0a691265a83eda356d3cc77a9bd7d2b747bda4418863b0ea90bccec5eb19a275`
`font_00_sfnt_off0000ff51.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFF51	5128 bytes
SHA-256: `5738aed0f843de6a95364b47d5e1bb119c82a896dcc656eaabc90052aa0f8861`
`font_01_sfnt_off000110eb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x110EB	10728 bytes
SHA-256: `2e54811aa4435415b2e25d6be27c114382a603e87aefb56e6e91dd92e059afab`

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