Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9df29d7f2a742ce…

MALICIOUS

PDF

73.2 KB Created: 2021-02-19 08:43:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 394aef44109fe9260f78c62196afd284 SHA-1: 36f523edc43c4127259aa16aaf5e3e0e342484bd SHA-256: d9df29d7f2a742ce93c3b5c968fd0ab760544cc4fbd420452fb24eb3c4fc142e
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://druttle.ru/wix?keyword=what+wrong+with+communism+yahoo+answers PDF link annotation
    • https://zidesefaw.weebly.com/uploads/1/3/2/6/132680856/7533924.pdfIn PDF document text
    • https://jitaginedisa.weebly.com/uploads/1/3/4/3/134324559/kofuzedot.pdfIn PDF document text
    • https://cdn.sqhk.co/jukowejazus/cYifNge/risks_and_rewards_of_space_exploration.pdfIn PDF document text
    • https://cdn.sqhk.co/kekotenonaxu/ctHHaUN/97091246803.pdfIn PDF document text
    • https://cdn.sqhk.co/zowesifona/gidIfjg/33622562561.pdfIn PDF document text
    • http://vobonenagixavus.66ghz.com/nawigijegafuzapusikuwow.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/viromibukoleliw/bombay_dyeing_cotton_bed_sheet_amazon.pdfIn PDF document text
    • https://s3.amazonaws.com/daniwodug/63260261310.pdfIn PDF document text
    • http://simipibenafar.epizy.com/how_to_add_bookmarks_google_chrome_android.pdfIn PDF document text
    • https://s3.amazonaws.com/bifamomove/91577326950.pdfIn PDF document text
    • https://s3.amazonaws.com/fojaxexino/gunukanofabuti.pdfIn PDF document text
    • http://vonolukover.epizy.com/69830963205.pdfIn PDF document text
    • http://limekukojaso.epizy.com/16544699772.pdfIn PDF document text
    • http://taxisariwoboduz.epizy.com/peter_bence_despacito_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/gedaxo.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_off0000e2a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2A9 5388 bytes
SHA-256: 90e608309ebb1a49e6f2d9b06747c2a7a839a423f832cddaf9b14c62266d430b
font_01_sfnt_off0000f4f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4F4 10136 bytes
SHA-256: 8d0747b358e5dd3c7ab20bc6daf4de905931daafd46fd20045c98043e1748cd0