Malicious PDF — malware analysis report

Static analysis result for SHA-256 277e9bbbf2df38d3…

MALICIOUS

PDF

44.3 KB Created: 2020-10-25 01:09:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 40271551c0335530a6acd3d2a71e2991 SHA-1: c337ab50ee2c869667aeecf73fb94b6c3249ffdd SHA-256: 277e9bbbf2df38d3d9e4fffe31983d539850473c4ff42a13aa5d2fbb2a9a1931
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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 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.
  • 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://ttraff.link/pify?keyword=la+cuisine+raisonn%25C3%25A9e+pdf In PDF document text
    • https://lifotuvuzaraxur.weebly.com/uploads/1/3/0/7/130775275/9275641.pdfIn PDF document text
    • https://wenadowepafim.weebly.com/uploads/1/3/4/3/134314247/vuzax.pdfIn PDF document text
    • https://boguvetasitob.weebly.com/uploads/1/3/1/3/131380850/nipijipapokux.pdfIn PDF document text
    • https://zevigetadafuwun.weebly.com/uploads/1/3/0/9/130969942/2702030.pdfIn PDF document text
    • https://ligofaxudatejot.weebly.com/uploads/1/3/0/7/130739538/267782.pdfIn PDF document text
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/eaccb7992dd.pdfIn PDF document text
    • https://wurikosaradusif.weebly.com/uploads/1/3/1/3/131384544/c36a399f768.pdfIn PDF document text
    • https://tobuzedatenet.weebly.com/uploads/1/3/4/3/134322281/zegixox-dejitu-zudowoki-bewugipukiwono.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/2812/3295/files/69360582396.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6341/9815/files/sosabovuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9699/0115/files/scada_software_architecture.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/0092/1764/files/darepasigok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb98ebce-5270-440d-a8d3-681a2b9365aa/72965909069.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d09c2690-0b63-4f26-bf9f-b7e45cbf4882/21573689737.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e914bf97-8392-4ba0-97fe-6f411346bdbd/70924812054.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b768f61-1f4b-4767-b4bd-2698d9b70071/xeputiduxivajuwugogurube.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/jekuvikoseze.pdfIn PDF document text
    • https://s3.amazonaws.com/fatisake/wuvoxavedogazuvi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/4823/3881/files/87899926772.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0933/4696/files/android_application_source_code_project.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_off000069b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69B7 5200 bytes
SHA-256: faa7c85495315302f9b993b426906df07f7b20e25a334194ae5cae138936142d
font_01_sfnt_off00007b34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B34 12436 bytes
SHA-256: 7176b3c80fec2ec7db456f9cfca728a4b9740863d320a9aca4ef40fac9270d02

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