Malicious PDF — malware analysis report

Static analysis result for SHA-256 07c080724ae5e536…

MALICIOUS

PDF

76.4 KB Created: 2021-04-07 01:49:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 26c8a02e28a3a4ef7d88c1cf79fa62ca SHA-1: 19c4cc651b7c9b047c0f1f35c2c82e39898b7f0d SHA-256: 07c080724ae5e5360cf8e8c87487dcb91272392a7573a50c65ea41853047e43f
66 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many pointing to disposable hosting and link farms, indicating a likely attempt to redirect users to malicious sites. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs suggests a phishing or malware distribution vector. No scripts were extracted, but the overall structure and URL distribution are indicative of a malicious campaign.

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://xezojetit.ru/award?keyword=backwards+day+book+pdf PDF link annotation
    • https://cdn.sqhk.co/noxuluni/khbhcWS/puketigatenefuvusojogoto.pdfIn PDF document text
    • https://topalezomezo.weebly.com/uploads/1/3/4/3/134305389/beberi.pdfIn PDF document text
    • http://polobasopika.mywebcommunity.org/camus_myth_of_sisyphus.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447437/normal_60014818810b6.pdfIn PDF document text
    • https://fewegako.weebly.com/uploads/1/3/1/4/131453302/pokez.pdfIn PDF document text
    • http://virujurarajilef.getenjoyment.net/billie_s_bounce_bass.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384644/normal_5ff49df274c81.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426422/normal_60653d9e9e018.pdfIn PDF document text
    • http://pawezujexas.mywebcommunity.org/will_aot_have_a_season_5.pdfIn PDF document text
    • http://vabenawak.iblogger.org/6521404419.pdfIn PDF document text
    • http://kikababono.mywebcommunity.org/11945653007.pdfIn PDF document text
    • https://cdn.sqhk.co/pudibamune/jV0hhdQ/amr_diab_tamally_maak_album.pdfIn PDF document text
    • https://fumewalifo.weebly.com/uploads/1/3/4/8/134884483/5799171.pdfIn PDF document text
    • http://salizurewaki.mypressonline.com/honda_hrc216_lawn_mower_price.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406776/normal_601c5e60e48f6.pdfIn PDF document text
    • http://riwozizedilar.mygamesonline.org/dominancia_apical_definicion.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445128/normal_603b14cae3c16.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://patuwovoparivi.rf.gd/blagues_en_francais.pdfIn PDF document text
    • http://lebusepuwiri.atwebpages.com/noramubov.pdfIn PDF document text
    • http://tifureboriva.epizy.com/49078916948.pdfIn PDF document text
    • http://livofos.epizy.com/53297478149.pdfIn PDF document text
    • http://xovefopu.myartsonline.com/plea_bargain_definition.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_off0000ec1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC1F 5564 bytes
SHA-256: f31568eee4153fb20e45a96acaa6dceeb3cb93a82670d9cfa0845f0a09a1b772
font_01_sfnt_off0000ff34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF34 10948 bytes
SHA-256: d2342f4b81e42b09895757fed04ee1c5992c808c511ba3757bba009e99b05d8e

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