Malicious PDF — malware analysis report

Static analysis result for SHA-256 50122dd9c1b19167…

MALICIOUS

PDF

42.3 KB Created: 2020-10-07 04:54:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 87b057020a4c886732f31dc2a4627890 SHA-1: 7e35f3b1930beca5258a80d2cb935b544aa62340 SHA-256: 50122dd9c1b19167e10f9b43501cbe2612e2309305da5a395acaabaca842343c
154 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which points to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'U8 smartwatch price' and the malicious URL. The presence of numerous external PDF links suggests a link farm or SEO manipulation tactic to distribute malicious content. The ML classifier also strongly indicated maliciousness.

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 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://gettraff.ru/pify?keyword=u8+smartwatch+price In PDF document text
    • http://moruma.mycupidclothing.com/uploads/1/3/0/7/130738902/521bf7e943d25f.pdfIn PDF document text
    • http://files.yourroadmaptohealthcarereform.com/uploads/1/3/2/6/132695574/6cb1f2d980e8e1.pdfIn PDF document text
    • http://files.kathyloureyes.com/uploads/1/3/1/0/131070798/nugesosowapozijopazi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c61aac5-19e6-4651-879e-c7ba2ef736d7/81372078424.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc62f58d-f39e-441d-a74d-3c5ca222277b/volusewiwaladakej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a9d0eea-8c99-4e03-8e2e-7897c65baff1/85022660564.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/0252/2532/files/marcy_exercise_bike_fan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/2035/7279/files/airguide_barometer_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3014/9270/files/carbon_county_pa_recorder_of_deeds.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1825/5516/files/uber_boston_forum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8697/6926/files/slither_io_codes_2020_invisible_skin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4982d047-d7bf-45c6-8e95-a78e7504f1ae/zatalowuzozeke.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c608c671-9fb3-4535-8f09-0c39bfbccee6/62325445214.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f9761b4-9f65-41d2-b777-aa6172244b9e/xotusawos.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_off000067b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67B5 5416 bytes
SHA-256: c7185db04f457db68e2b674f9c0e2a9047de25336026c6652192ad0f9393f7fd
font_01_sfnt_off00007a0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A0D 10056 bytes
SHA-256: 85afd45c3a753fd6ce38e35027c0e1ac4ba2b42839558e3656827cda36064f56

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