Malicious PDF — malware analysis report

Static analysis result for SHA-256 efd83d93953a1648…

MALICIOUS

PDF

111.2 KB Created: 2021-03-31 11:23:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 2b1071e06d2387746b43c964aa5d0569 SHA-1: 74139a58399e0aa891b13b8716b75fd7c59f4a77 SHA-256: efd83d93953a164840ef6c3858a52920335ebcbbd60b3a6201550e241cca4118
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://fokemale.ru/strik?utm_term=born+a+crime+summary+chapter+15 PDF link annotation
    • http://sayseedokg.com/on_the_spiritual_in_art_kandinskyyjywg.pdfIn PDF document text
    • https://cdn.sqhk.co/tasokuxu/H54hggh/99022074334.pdfIn PDF document text
    • http://appless.space/lomefaturexi4gnli.pdfIn PDF document text
    • http://septiki-rf.website/lexezaxofomaputukozudaj6kd0o.pdfIn PDF document text
    • http://freefire-gifts.com/can_you_make_calls_on_fossil_gen_5tdg62.pdfIn PDF document text
    • http://lisolu.org/51757945965zfujf.pdfIn PDF document text
    • http://netewe5.xyz/blablacar__androidyh68k.pdfIn PDF document text
    • http://momentikshop.space/third_form_at_malory_towerswz1jc.pdfIn PDF document text
    • http://vobafoselalulor.mypressonline.com/gubopigejazoturewisoziza.pdfIn PDF document text
    • http://tokio-2020.fun/wosomop93f81.pdfIn PDF document text
    • http://discovljzg.fun/kikadugumemuvatubajoumdb9.pdfIn PDF document text
    • https://cdn.sqhk.co/xeliwiwogivo/giTkLgc/dbz_battle_of_gods_movie_download.pdfIn PDF document text
    • http://fortuneo.biz/they_say_i_say_4th_edition_free_download51yeu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fopalew/whatsapp_status_telugu_love_failure.pdfIn PDF document text
    • https://11fe2947-f393-4df3-905d-f9f3730e834a.filesusr.com/ugd/b1b16e_6765504399d3461aa0cdeac5c650f685.pdf?index=trueIn PDF document text
    • https://ef4b221f-cfb4-47e8-bf1d-3b5092770df7.filesusr.com/ugd/4948da_249d4909da7f4775a0115575e5d62ac9.pdf?index=trueIn PDF document text
    • http://telifujovemevo.atwebpages.com/is_beats_by_dr_dre_worth_it.pdfIn PDF document text
    • https://fc06435f-e709-4c80-b59d-96fa470c1a13.filesusr.com/ugd/bdc04d_8990c003f55d4546a7e845daf5f657c9.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wusigipufuvowix/81821020908.pdfIn PDF document text
    • https://cf268418-7549-4780-9cff-e39e61b5276c.filesusr.com/ugd/0b1cf2_60ae4a4b747846478ae5efa4f57f4eb0.pdf?index=trueIn PDF document text
    • https://5e0c4d4d-41f9-428c-9564-b93e7cff6769.filesusr.com/ugd/510691_8edbcde9afe1456ebfc69d4717476f54.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kuxuxemu/kaspersky_free_antivirus_2019_offline.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_off000178ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x178AB 5468 bytes
SHA-256: 4286fd578b1625142e9d439630071fd289033b2414f1cf7cb7db11f245207d15
font_01_sfnt_off00018b2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18B2D 10976 bytes
SHA-256: 8555d1e503148c62fb85a658a3833b8d45633fd99985437b784dac24f383b570

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