Malicious PDF — malware analysis report

Static analysis result for SHA-256 316c1f17768a9049…

MALICIOUS

PDF

76.2 KB Created: 2021-03-17 04:25:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3a82ec5284f6f51ce4ee5e4532653e66 SHA-1: 970f55f004876c0425f92bf850996905bb372a21 SHA-256: 316c1f17768a9049a19424a110ad3c9a0791d8fa7787581734daeaa8f69e2a01
66 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous embedded URLs pointing to disposable domains and link farms, indicating a likely SEO manipulation or redirection scheme. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs suggests an attempt to lead the user to potentially harmful content. No scripts were extracted, but the overall structure and heuristic firings point towards a malicious document designed to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://bologen.ru/wix?keyword=research+informed+practice+social+work PDF link annotation
    • https://reratuzofi.weebly.com/uploads/1/3/5/3/135346135/mezudajemi.pdfIn PDF document text
    • http://vebuwovivulab.mygamesonline.org/africa_country_map.pdfIn PDF document text
    • http://tuduvodakep.mypressonline.com/linksys_wrt160n_v3_change_password.pdfIn PDF document text
    • http://lamovingcompany.com/gesakunifisonuzudebqqbr.pdfIn PDF document text
    • http://clipshd.design/2861079406951c9e.pdfIn PDF document text
    • https://raguwamirib.weebly.com/uploads/1/3/4/6/134630778/jomenegos-zedeg-xoxovis.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470975/normal_5fc8865f973df.pdfIn PDF document text
    • https://buxexemap.weebly.com/uploads/1/3/4/8/134890763/wiranibelotin_zifomapalozuz_zefunulujibugog_tujutavuze.pdfIn PDF document text
    • http://pogekoxuw.mygamesonline.org/5039925527.pdfIn PDF document text
    • http://wei-nmvc.com/freightliner_cascadia_radio_antenna30ozr.pdfIn PDF document text
    • http://tegor.xyz/zuvefewavuvaxoxaruwowa079d.pdfIn PDF document text
    • http://support-copyrighthelpservice-about.com/281931793353vik3.pdfIn PDF document text
    • http://rusakova.space/53177685469x67no.pdfIn PDF document text
    • https://kumaradogutaf.weebly.com/uploads/1/3/0/7/130775833/25c3a406cd2985.pdfIn PDF document text
    • https://sexomimafu.weebly.com/uploads/1/3/4/3/134311134/xinabazavul.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413835/normal_602acecf65b14.pdfIn PDF document text
    • http://qwert-ita.fun/macbeth_act_3_scene_guide_quizletjxanv.pdfIn PDF document text
    • http://inter-kalinka.ru/movie_to_gif9u9xr.pdfIn PDF document text
    • http://fruit-citrus.space/words_their_way_sorts_kindergartenslwmw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dasobiviwadodaj.atwebpages.com/how_to_train_for_5k_for_beginners.pdfIn PDF document text
    • http://vuzuwukef.atwebpages.com/wedding_march_piano.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_off0000ec53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC53 5560 bytes
SHA-256: e6f9e1d6e998f4ba9be4ba4335a5e0ab386b51b2dfd5c626f7a3dd2e3cef1a20
font_01_sfnt_off0000ff2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF2A 10508 bytes
SHA-256: f3bb9ddc0c60ff89fdf41e990e6a2afb9d2b0def7f4bae947806cc86a6412161

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