Malicious PDF — malware analysis report

Static analysis result for SHA-256 467409dc83a43cb5…

MALICIOUS

PDF

46.8 KB Created: 2020-10-29 06:10:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 46a6903edbe9514eb8fe9b5dcf10859a SHA-1: 28e94ec5ca31fffec8aa4d0d977922339edce7f2 SHA-256: 467409dc83a43cb555be6105a5530cfca3871cbbc7b9f22e6c1f1702925dc80d
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.me/123?keyword=silent+paint+remover+video In PDF document text
    • https://rowofijiguni.weebly.com/uploads/1/3/4/4/134479741/2282141.pdfIn PDF document text
    • https://vuvofazomegudej.weebly.com/uploads/1/3/4/3/134329778/3338390.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380869/normal_5f8bda8eb1621.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392193/normal_5f8e2b530f331.pdfIn PDF document text
    • https://zeginuvo.weebly.com/uploads/1/3/0/7/130775519/5169751.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379837/normal_5f8fc65442ac8.pdfIn PDF document text
    • https://norumevi.weebly.com/uploads/1/3/0/9/130969469/jixitopisanorexaf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365599/normal_5f887cab83efc.pdfIn PDF document text
    • https://nixuxani.weebly.com/uploads/1/3/4/4/134433038/lasupuwawuketi_kanovo_panarexodanin.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371791/normal_5f8ef53cce048.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/6f5be3a943e.pdfIn PDF document text
    • https://xubuvene.weebly.com/uploads/1/3/1/3/131380433/tuzunaderesafulozow.pdfIn PDF document text
    • https://noxetetejiv.weebly.com/uploads/1/3/4/3/134391164/8127031.pdfIn PDF document text
    • https://kidunaxu.weebly.com/uploads/1/3/1/4/131437100/bozavurowelunosexebe.pdfIn PDF document text
    • https://betutinixe.weebly.com/uploads/1/3/4/4/134481053/widuvepadi_fumedobefipuwi_nafedezevubap_wamonivodetobug.pdfIn PDF document text
    • https://gudojovevisepu.weebly.com/uploads/1/3/4/3/134314990/bagigojopilobura.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0600/9255/files/pazalajajaxobedi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9191/3632/files/glub_glub_hat_minecraft.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/9871/6324/files/tokuzolawat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/0229/0079/files/tusudotugifanibukuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3162/5882/files/piwofuxivizilifilatolax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/4864/7835/files/77358750427.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/0279/6442/files/hecate_and_her_dogs.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_off00006941.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6941 4876 bytes
SHA-256: 2e8f7ac73bd3b5043ecbf7c02667061f96056da97aa29e370aa5208d733c6268
font_01_sfnt_off000079ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79AE 10820 bytes
SHA-256: 4bdcce20ec8a95c1843408772e32b8021b83f55023f91f3e6a60d1b6e5cc1ac0
font_02_sfnt_off00009e69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E69 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333