Malicious PDF — malware analysis report

Static analysis result for SHA-256 e12302c2d4fdca80…

MALICIOUS

PDF

45.7 KB Created: 2020-10-29 15:43:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: ad4b8e9b8a61d1b307b272e1acf44503 SHA-1: 43fc7426c940ed47d086c3fbb5d4547df0ef7a37 SHA-256: e12302c2d4fdca803558f7c1b177c646238dbd3b12a9656e589d3953df1f8c7f
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically to `https://ggtraff.ru/strik?keyword=the+amazing+spider+man+parents+guide`. The document body, though heavily obfuscated, contains this URL, suggesting a lure to a phishing or malware distribution site. No scripts were extracted, but the presence of numerous links to potentially disposable hosting indicates a link farm for SEO poisoning or traffic redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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://ggtraff.ru/strik?keyword=the+amazing+spider+man+parents+guide In PDF document text
    • https://besavikeneg.weebly.com/uploads/1/3/2/8/132815808/8070083.pdfIn PDF document text
    • https://bavejojonosepes.weebly.com/uploads/1/3/1/3/131380601/2155661.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/zikarab.pdfIn PDF document text
    • https://pafetuvuwube.weebly.com/uploads/1/3/4/3/134321561/bazedimomewobopudo.pdfIn PDF document text
    • https://jikubefu.weebly.com/uploads/1/3/4/3/134318914/feadadd4b9f.pdfIn PDF document text
    • https://firedisivimi.weebly.com/uploads/1/3/0/9/130969818/42532088f4.pdfIn PDF document text
    • https://migirebunimalab.weebly.com/uploads/1/3/1/3/131383914/lixuporivosu.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/321186e0-ce94-4ad6-a787-060071213de7/copper_sulphate_molar_mass.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/9024/0179/files/pride_pathrider_mobility_scooter_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/8691/1919/files/52528828987.pdfIn PDF document text
    • https://s3.amazonaws.com/gifiz/wemibidukagefixume.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/9249/5521/files/android_emulator_free_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/jofunozuzof/mifun.pdfIn PDF document text
    • https://s3.amazonaws.com/sivanira/angiospermas_monocotiledoneas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/5698/2937/files/polyscience_sous_vide_professional_classic.pdfIn PDF document text
    • https://s3.amazonaws.com/baposivarabuj/86291127027.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007320.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7320 5340 bytes
SHA-256: 7167b374f04f366f50483af632be3c664c4150e66133a1392cd76a2e118402c1
font_01_sfnt_off00008528.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8528 10564 bytes
SHA-256: a1bbcb3ced42b63190e0c646d7ab862dd81661501ede3742bd82b6d1b4c5b60c

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