Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d1478174be60584…

MALICIOUS

PDF

65.8 KB Created: 2021-02-19 23:23:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 2d7c5005406e7cfd1405c3a372d53732 SHA-1: 9a2bee1414e90c07b2d8874db051d13ff70b4985 SHA-256: 0d1478174be605845f69424151f73cfcbdf0238513c9833ca74257d333cfa4e4
184 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with at least one identified as a known malicious redirector. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body appears to be obfuscated or corrupted, but the presence of links and the heuristic firings suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • 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 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://yafferge.ru/strik?utm_term=bissell+powerforce+helix+rewind+belt In PDF document text
    • https://cdn.sqhk.co/forexidof/gdvcwJo/voice_activated_jumping_game.pdfIn PDF document text
    • https://cdn.sqhk.co/sovanoniwuva/cicTmXq/world_war_2_in_color_documentary.pdfIn PDF document text
    • http://idclick.cash/vatomunatu99qsh.pdfIn PDF document text
    • http://5coupon.info/demonic_gorilla_zerker_guidefpnb5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445889/normal_601a72b9381f0.pdfIn PDF document text
    • http://theboldpantsproject.com/watch_filipino_drama_eng_subxpuhl.pdfIn PDF document text
    • http://idealicaitaly.site/790811152590pyuv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452386/normal_60140c927c910.pdfIn PDF document text
    • http://demask.fun/68860657053mmlgg.pdfIn PDF document text
    • https://cdn.sqhk.co/tajaketo/bLIh8je/25089085001.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479715/normal_6024af9927c86.pdfIn PDF document text
    • http://frontglass.xyz/bhaijaan_movie_song_shakib_khani4zvs.pdfIn PDF document text
    • http://stal-kemerovo.ru/lucky_life_8_reviews29jhr.pdfIn PDF document text
    • http://help-nanny.site/free_resume_template_word_behancetep92.pdfIn PDF document text
    • https://cdn.sqhk.co/giganopof/pijPFCF/how_to_make_cake_icing_using_whipping_cream.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406464/normal_5ff7555ab1285.pdfIn PDF document text
    • http://nout-sale.site/kazuna_etalk_manual6a2gs.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483365/normal_5fedc9c6c2592.pdfIn PDF document text
    • http://vafakewa.iblogger.org/8633367324.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://forubav.rf.gd/58752697874.pdfIn PDF document text
    • http://wokeben.epizy.com/65291626351.pdfIn PDF document text
    • http://gebozobab.epizy.com/primer_convenio_de_ginebra.pdfIn PDF document text
    • http://nogojituwizax.epizy.com/81428768572.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_off0000c38a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC38A 5380 bytes
SHA-256: db086c7efbba939d26b36cff3d4e0198c7f347df2f9094a6909dedf572be7cdc
font_01_sfnt_off0000d5ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5EA 10580 bytes
SHA-256: 484848fc5129ae0e2cd6f9d4597c8e56246db5ce8b6ab4547ea01e5241a81e8b

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