Malicious PDF — malware analysis report

Static analysis result for SHA-256 300a1b1858f1e46b…

MALICIOUS

PDF

46.9 KB Created: 2020-10-27 02:32:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 7180734154750dd9d49c05a2fbd46b72 SHA-1: 2b2b082f91673de3bf6ab7d1c17e58ccb19192ea SHA-256: 300a1b1858f1e46b73565d610a4d51705b525c52da4ed31abb521f1200e4ebe7
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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 and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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://ggtraff.ru/strik?keyword=cmu+tv+guide In 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/1/0435/5175/2344/files/what_is_heroic_epic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/2925/7128/files/contract_killer_2_apk_mod_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8985/2571/files/nisibes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2084/7768/files/28104650397.pdfIn PDF document text
    • https://s3.amazonaws.com/davolazupivowi/alkyd_resin.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/75774593445.pdfIn PDF document text
    • https://s3.amazonaws.com/rerinago/pulivinefuselirare.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2899f37d-6e76-4f0f-9eb6-e92984c2ad5a/fupebumejatom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f845e71e-13aa-4dbd-8e14-46071dae0e39/geworonazojikode.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec50c8a3-015a-45b5-ba8c-371851ceea5f/27401398187.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7279/0427/files/earn_to_die_4_unblocked_games_77.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1225/7952/files/36915653771.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/3857/5258/files/jiminekotomuxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/4494/5051/files/69693301514.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/9331/0631/files/zajovo.pdfIn PDF document text
    • https://s3.amazonaws.com/pisik/temaxamufomatuven.pdfIn PDF document text
    • https://s3.amazonaws.com/wovitiku/importance_of_assessment_and_evaluation_in_education.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/37603991197.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/kiwalas.pdfIn PDF document text
    • https://s3.amazonaws.com/dogazisuze/vuzekuwoza.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000699a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x699A 4592 bytes
SHA-256: e0a40b6bd69ce5390da8a841a1dd8185ec640bf8bf9e8e8945a45111299f7419
font_01_sfnt_off00007931.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7931 11092 bytes
SHA-256: 1ec9c96b193d0e77d502aa031c11b1c83cd0310553b2a6edb1af27b1e0918298
font_02_sfnt_off00009f1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F1A 6084 bytes
SHA-256: fe2fcb21638d77a13ab5a0035f1ec4ff1483f61d84902e7352c885bc49d79dd3

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