Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ff2500bbf022670…

MALICIOUS

PDF

43.8 KB Created: 2020-10-01 22:40:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: de97b80790aed331293358a2c51c0935 SHA-1: 040affc6e3546b4b1b204ca994b15fbec1267651 SHA-256: 1ff2500bbf0226707cc11bf4fd7d3185900ca0533efb854991edf3c6e7ff1397
124 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the embedded URL is the primary indicator of malicious intent, likely serving as a lure for phishing or malware distribution.

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://gettraff.ru/strik?keyword=adjunto+adverbial+exerc%25C3%25ADcios+com+gabarito+7o+ano In PDF document text
    • https://site-1036872.mozfiles.com/files/1036872/gokuxemejobod.pdfIn PDF document text
    • https://site-1037010.mozfiles.com/files/1037010/73737717975.pdfIn PDF document text
    • https://site-1039493.mozfiles.com/files/1039493/15272313613.pdfIn PDF document text
    • https://site-1037827.mozfiles.com/files/1037827/54296758973.pdfIn PDF document text
    • https://site-1037202.mozfiles.com/files/1037202/97036304863.pdfIn PDF document text
    • https://site-1037101.mozfiles.com/files/1037101/xaxuvuganito.pdfIn PDF document text
    • https://site-1037245.mozfiles.com/files/1037245/xanedujuvadaxisasum.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0472/3179/5365/files/34456292008.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/4973/3282/files/tdah_livro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0467/3697/files/38626188259.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/3223/5165/files/chino_community_childrens_theatre.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3377/9611/files/gemini_cedar_point_closing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/2212/4709/files/tevisepaz.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000581e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x581E 5608 bytes
SHA-256: 2e42f362065dffe1aae9e2f68db0d546a63e946b571560de9b4a29f653a5a259
font_01_sfnt_off00006b2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B2C 12664 bytes
SHA-256: afb2af608b8888acaa480cc27643e6714c987a75e75cddfbfaa49d4cc910941c
font_02_sfnt_off000091d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91D6 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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