Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5ab2f8cec5dd5ce…

MALICIOUS

PDF

72.4 KB Created: 2021-03-02 23:20:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 1ac44f864d9851178afac1f6e95867a4 SHA-1: 21fbdac54e935027b3ecd63ab2623dd1143036ba SHA-256: a5ab2f8cec5dd5ce6e2b8e785f37369692f0f30f91e8ca5812d632816f79c179
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://xajibur.ru/award?keyword=ganamrutha+bodhini+%2528sangeetha+bala+padam%2529+english PDF link annotation
    • http://mesanezedid.mypressonline.com/what_is_the_verse_train_up_a_child.pdfIn PDF document text
    • https://cdn.sqhk.co/wirubetena/FwSgfjb/daxolulumexedubovumadofu.pdfIn PDF document text
    • https://kuwomodelinero.weebly.com/uploads/1/3/0/7/130776449/gasebumedukel.pdfIn PDF document text
    • https://movakesomerinid.weebly.com/uploads/1/3/4/5/134528648/jerutizon.pdfIn PDF document text
    • https://cdn.sqhk.co/farafakilof/jgeANgj/29293577109.pdfIn PDF document text
    • http://zotonurapad.22web.org/53442059280.pdfIn PDF document text
    • https://zuvagojajom.weebly.com/uploads/1/3/5/3/135398962/kupoluxoj_rudalera_lasomomesisuxit.pdfIn PDF document text
    • https://vinixojaz.weebly.com/uploads/1/3/5/3/135312356/0a4757041.pdfIn PDF document text
    • http://jifarobajis.sportsontheweb.net/how_to_figure_out_ratios_6th_grade_math.pdfIn PDF document text
    • http://kifopelidito.mypressonline.com/how_to_connect_arc_to_receiver.pdfIn PDF document text
    • https://boderaraza.weebly.com/uploads/1/3/1/4/131454415/9626988.pdfIn PDF document text
    • https://naxosetoj.weebly.com/uploads/1/3/0/7/130775404/ginovupababopo.pdfIn PDF document text
    • https://jixisejilikabow.weebly.com/uploads/1/3/4/2/134265892/bedoxorefufudanati.pdfIn PDF document text
    • https://bufudelazevel.weebly.com/uploads/1/3/4/7/134734798/75d5da1b5a70517.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://s3.amazonaws.com/fuvidokibet/wifiritojujarut.pdfIn PDF document text
    • http://demaketimazo.rf.gd/kekizupapu.pdfIn PDF document text
    • https://s3.amazonaws.com/jemisajoda/automotive_engineering_business_plan.pdfIn PDF document text
    • https://s3.amazonaws.com/kudufigunabi/sandisk_clip_jam_firmware_update.pdfIn PDF document text
    • https://s3.amazonaws.com/jawusawar/genie_2028_learn_button_location.pdfIn PDF document text
    • https://s3.amazonaws.com/petuzutemixuvod/android_bytebuffer_copy.pdfIn PDF document text
    • http://juvumutat.rf.gd/what_to_take_to_fe_exam.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d17b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD17B 5700 bytes
SHA-256: 84da18c109194c8e7ce62201a3843ef697d602034f21070a7855c84aa134847f
font_01_sfnt_off0000e4b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4B7 10388 bytes
SHA-256: ce5d7e4f0d42f7c30442b266ec9a67f6b356bba4dc1089a3b584e0cbbe60e929
font_02_sfnt_off0001088a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1088A 2320 bytes
SHA-256: 992f1f48767e9789809edcc007c3694f0f7ac7ea0fb1aa79e5db20c446531a4a

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