Malicious PDF — malware analysis report

Static analysis result for SHA-256 c30dd8d9f24dc5f8…

MALICIOUS

PDF

81.3 KB Created: 2021-06-04 06:31:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: f9da7700f1d2f47c15eb64c7c1d9f65e SHA-1: 904a0769b57963225cfb425b7dc7fd3fcc0079cc SHA-256: c30dd8d9f24dc5f89e083f974fd13bc7542bb29a6642acd97dacffc54f309a71
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://allytemp.ru/pbw?utm_term=creature+3d+full+movie+download+filmywap+480p PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4388421/normal_602864adea0b3.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4378620/normal_60afeb7ff2526.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450641/normal_5fe14a2f89b83.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416139/normal_6019d742a43f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455684/normal_5fe78d9b3f311.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384460/normal_5fdd9397b2e98.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451348/normal_6018ca9f96a8d.pdfIn PDF document text
    • https://radotarurejatu.weebly.com/uploads/1/3/1/6/131607565/vodazifenugipofa.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4416810/normal_60afec296e8c1.pdfIn PDF document text
    • https://danegatazi.weebly.com/uploads/1/3/0/7/130776269/efc4e32.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470980/normal_6001e166c2f27.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://uploads.strikinglycdn.com/files/38419e79-4083-44b2-b221-b3a718db8eb1/rofojetijagulero.pdfIn PDF document text
    • http://sozakuvepar.pbworks.com/w/file/fetch/144485301/yamaha_waverunner_650_owners_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26779669-26e5-47c8-a0d8-d4cdac8e5905/what_is_the_best_brand_of_american_fridge_freezer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff561569-74c3-4796-bb60-81a73f9c654a/46001271371.pdfIn PDF document text
    • http://fixiguru.pbworks.com/f/a_christmas_element_word_search_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3514476f-262a-4e7e-9d53-5f1052ca459f/la_catedral_del_mar_serie_actores_nios.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_off0000f007.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF007 5756 bytes
SHA-256: 7bfdb32185b9c0a1625ae85d592bc66f884d6bd9db101db3f90077590eef6a80
font_01_sfnt_off000103ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103AC 11280 bytes
SHA-256: d8c893b6012ace1d4c59428f86c6baf984572489b701cd490b6e00a0b9163001
font_02_sfnt_off000129d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129D1 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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