Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e2913c2625d0406…

MALICIOUS

PDF

73.1 KB Created: 2021-02-27 09:13:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 391540ff4f6adaaf918a1a9adc45c695 SHA-1: 560602b5ea4acec404dc83cd08c0619f2aebecb0 SHA-256: 3e2913c2625d04068ff539c144a552ea98de325f3b487a0717ec854829dc08df
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://mezovuduw.ru/award?keyword=thermaltake+core+v1+snow+mini-itx+cube+case+with+side+window PDF link annotation
    • http://pofuxubilet.sportsontheweb.net/16.1_our_dynamic_climate_key_concepts_answers.pdfIn PDF document text
    • http://zuregazezoral.mygamesonline.org/moto_g7_plus_user_manual.pdfIn PDF document text
    • https://napokepuwaju.weebly.com/uploads/1/3/1/1/131164128/9191432.pdfIn PDF document text
    • http://xudiremomikuxe.iblogger.org/jajuvimafaj.pdfIn PDF document text
    • http://zesenadozefut.sportsontheweb.net/xosesomudo.pdfIn PDF document text
    • https://jefamozalubibul.weebly.com/uploads/1/3/1/4/131438275/cb42d18a8afe7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://roxigivakupumun.epizy.com/58221339554.pdfIn PDF document text
    • http://koxapotunusoj.epizy.com/sonutimabesowoxekizika.pdfIn PDF document text
    • http://giserokusifuzi.epizy.com/funny_safety_posters_free_download.pdfIn PDF document text
    • http://wifofaxip.epizy.com/17684336646.pdfIn PDF document text
    • http://pabewuvuxaf.onlinewebshop.net/rubutigogifijafenonuji.pdfIn PDF document text
    • https://s3.amazonaws.com/xufoxorog/ayo_teo_rolex_full_song.pdfIn PDF document text
    • http://jumebesatupa.epizy.com/zeluwozizi.pdfIn PDF document text
    • https://s3.amazonaws.com/vapite/bitdefender_mobile_security_antivirus_full_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/mekonulegipero/xefusugizuxogewovopabik.pdfIn PDF document text
    • https://s3.amazonaws.com/kujesulad/bhimavaram_bullodu_movie_songs_ing.pdfIn PDF document text
    • https://s3.amazonaws.com/gagotaniwipure/1400492245.pdfIn PDF document text
    • https://s3.amazonaws.com/jukoxisojow/kotukojazojowixuli.pdfIn PDF document text
    • https://s3.amazonaws.com/sedowedi/wedaginimaxiwotovotuwiro.pdfIn PDF document text
    • https://s3.amazonaws.com/likadojivivofu/fupusujelakulutojuzoxezez.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_off0000dc5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC5C 5636 bytes
SHA-256: 7e3cca78a03d83a0b683340c51f5650e772327fe2f957717753c937d80f9f7d7
font_01_sfnt_off0000ef77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF77 11552 bytes
SHA-256: b0da5f62a1ad74292fba2a81bde45c9fb75c5b1915dd1122425700b70b0fad33

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