Malicious PDF — malware analysis report

Static analysis result for SHA-256 45a770ba57900abd…

MALICIOUS

PDF

80.4 KB Created: 2020-11-07 17:53:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2a4ffcd0e13b741d389924693e56d5b5 SHA-1: 43e96a7687d95d7007fe88fe62f8bdaec2722b3b SHA-256: 45a770ba57900abd0c821ce152f4894bf3a3474553abf8b3a7327beb24adb5a3
66 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one identified as a potential malicious link farm. The ML classifier strongly indicates maliciousness, and the document body, though heavily obfuscated, contains references to URLs that are likely intended to redirect the user to malicious sites. No scripts were extracted, but the overall structure suggests a lure for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://trafffi.ru/123?keyword=solo+assault+ffxi PDF link annotation
    • https://paxesejok.weebly.com/uploads/1/3/4/3/134348383/mutogakuro.pdfIn PDF document text
    • https://wopeduvolevim.weebly.com/uploads/1/3/0/7/130776212/6281626.pdfIn PDF document text
    • https://sadogadodewinog.weebly.com/uploads/1/3/4/3/134311907/570854.pdfIn PDF document text
    • https://gejovekozeja.weebly.com/uploads/1/3/4/4/134401956/ladadiwusomolem_jajoxuvem_giruw_kupisugalamile.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/6e801162-1195-4487-8878-8689a245821d/jailbreak_my_iphone_3g_free.pdfIn PDF document text
    • https://sisiviweze.files.wordpress.com/2020/11/goresosuvufat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/102f362f-364a-4332-b172-9e7d265b839d/dragon_ball_z_majin_buu_episodes.pdfIn PDF document text
    • https://lodoxepal.files.wordpress.com/2020/11/reremuradivuvevedivogobid.pdfIn PDF document text
    • https://s3.amazonaws.com/bededuxotulapil/arnold_high_school_florida.pdfIn PDF document text
    • https://fafutuk.files.wordpress.com/2020/11/change_the_following_sentences_from.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2bebbd4-e1ba-4da3-ae16-260db2fa072b/new_beginnings_milwaukee.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_off0000ff2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF2A 4836 bytes
SHA-256: 1cda4d946afd04499afad955c3e7aff70170da70de49a48790a23dcdff14c8d0
font_01_sfnt_off00010fb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FB7 11136 bytes
SHA-256: 4ff171afe2063226ab08b9dddb705cebc809f6c63e9aa483f19de33a8f223310