PDF malware analysis — malicious · 25bf326335d75929

MALICIOUS

PDF

73.0 KB Created: 2020-10-24 21:18:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22

MD5: bfef8775043b17d591701a0e61cc9232 SHA-1: 9deaca7934a388ba8f7db3e3d18016842b20ee5b SHA-256: 25bf326335d759296b3ace96d0be3316a79e876b5ee960c26be2479de39039c9

184 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document functions as a link farm, directing users to a malicious redirector and numerous other PDF files hosted on disposable domains. The embedded link 'https://ttraff.me/pify?keyword=download+teks+khutbah+idul+fitri+pdf' is designed to deceive users into downloading further content. The ML classifier strongly indicated maliciousness, and the presence of a large number of external links on potentially untrusted hosting supports this assessment.

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.
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.
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.me/pify?keyword=download+teks+khutbah+idul+fitri+pdf In PDF document text
- https://xogexemufak.weebly.com/uploads/1/3/1/4/131437987/ea6f5f5f338e8e4.pdfIn PDF document text
- https://nugaginidej.weebly.com/uploads/1/3/4/4/134475369/mogapegewoxatalipanu.pdfIn PDF document text
- https://buveziketi.weebly.com/uploads/1/3/1/3/131398526/2023217.pdfIn PDF document text
- https://dufevirefat.weebly.com/uploads/1/3/1/4/131438490/jazojevafapigunatun.pdfIn PDF document text
- https://givifajilodox.weebly.com/uploads/1/3/0/8/130874655/16e466f656.pdfIn PDF document text
- https://gewosawoma.weebly.com/uploads/1/3/0/7/130739201/fdd8c348.pdfIn PDF document text
- https://xesaranit.weebly.com/uploads/1/3/2/6/132696194/vifew_mumifanitid.pdfIn PDF document text
- https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/sulusilalope-jobede.pdfIn PDF document text
- https://lodirunesu.weebly.com/uploads/1/3/0/8/130874391/0491d8.pdfIn PDF document text
- https://wibugosavuzatug.weebly.com/uploads/1/3/4/3/134349607/kinunagup.pdfIn PDF document text
- https://pujatimosu.weebly.com/uploads/1/3/2/6/132681823/684abc16f5e2637.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/1/0431/6548/3172/files/amc_loews_theatre_waterfront_pa.pdfIn PDF document text
- https://s3.amazonaws.com/bupijila/74839336862.pdfIn PDF document text
- https://s3.amazonaws.com/wekibik/senior_manager_interview_questions_and_answers.pdfIn PDF document text
- https://s3.amazonaws.com/zetare/petudepaso.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0482/5759/7595/files/hoopz_flavor_of_love_instagram.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0483/5940/7765/files/lelerawaberizajexev.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0499/0346/8735/files/english_speaking_in_marathi_free_download.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_005_off0000e016.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0xE016	30684 bytes
SHA-256: `9115cf60107802bff8a6477dc8a31c1b4694dd3446d93429cb9879e91b847218`
`font_00_sfnt_off0000aa01.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAA01	5424 bytes
SHA-256: `71b4d4f6b4a6bf7284d817da9413fd18e06c0b369d501573f7027dc44db903af`
`font_01_sfnt_off0000bc7e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBC7E	10580 bytes
SHA-256: `8d84254fb20b8ed32bcfb7f487a23f2edbf2ae91e80eddbd9ac267442bfc99d7`

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