Malicious PDF — malware analysis report

Static analysis result for SHA-256 40cf48b02fb62712…

MALICIOUS

PDF

47.8 KB Created: 2020-10-26 14:46:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 75b9630aa6058308bd7ce37e79f8e08e SHA-1: 76c9ff79558a6b5a60ee563400e9ea81526851be SHA-256: 40cf48b02fb627121a7e896eced22bdbd2700627d10e7338b6125eb266bc778d
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links disguised as a results download, which is a common social engineering tactic. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates that the primary link leads to known malicious infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a malicious site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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://cctraff.ru/aws?keyword=ap+grama+sachivalayam+results+pdf+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366958/normal_5f892982e3299.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374953/normal_5f89581b34caf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383573/normal_5f8d1f9dc76ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391896/normal_5f90b0424d3a3.pdfIn PDF document text
    • https://mumixopid.weebly.com/uploads/1/3/1/8/131872042/2585702.pdfIn PDF document text
    • https://mulelene.weebly.com/uploads/1/3/4/4/134440938/6653478.pdfIn PDF document text
    • https://lavigepes.weebly.com/uploads/1/3/4/4/134437347/denuziluli.pdfIn PDF document text
    • https://mefemanodi.weebly.com/uploads/1/3/1/4/131454269/6d5db6ae5452625.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/kavitokolezub/34706062647.pdfIn PDF document text
    • https://s3.amazonaws.com/labitajaxatufib/wings_of_fire_book_1_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e394f853-8714-4280-81ac-f1bc3f85c59e/libros_de_botanica_chilena.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5e77906-8881-49d6-985b-ee17ad5ffe75/xakasupofomaren.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4db75d8a-c033-4704-8b62-eaf1139efa65/92352516032.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b97b94b3-ab56-46a7-a2c0-c25e9cc5bc5c/satavubagokadesivo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4353cdc-75cb-4372-8287-def88d01b61c/70991453316.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/1486/4027/files/pace_v_alabama_1883.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/3867/1526/files/wireless_gsm_alarm_system_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/3672/0534/files/magnetic_tow_lights.pdfIn PDF document text
    • https://s3.amazonaws.com/zomuzigo/69054366367.pdfIn PDF document text
    • https://s3.amazonaws.com/zosevid/case_law_research.pdfIn PDF document text
    • https://s3.amazonaws.com/donake/birads_score.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007231.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7231 5812 bytes
SHA-256: 6e9258b4e81e8c1a0dbee8a695557a2f6f9da38911996f02f418f7ef1ee4d134
font_01_sfnt_off000085ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85EF 13840 bytes
SHA-256: 44443f03be0f39f7a4df5ab55d01e55a83ab9bcd4a5eee595bf1547e7f6dbdd6

Open this report in the interactive analyzer, or submit your own file for analysis.