Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfcf84294fbb2bef…

MALICIOUS

PDF

42.3 KB Created: 2020-10-04 19:39:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: d7acebee3279bf8c8c32ae618c96fe99 SHA-1: 725af649ca3707224472408590e7a3d23f5cf177 SHA-256: bfcf84294fbb2befe92dae512f738ed71024fa622418dbfac423eb606a98c4bd
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://cctraff.ru/strik?keyword=macarena+perde+o+bebe+vis+um+vis In PDF document text
    • http://junix.greenlotusdreams.com/uploads/1/3/0/8/130874050/jasisimowig.pdfIn PDF document text
    • http://gazobeba.bridges2learning.net/uploads/1/3/0/9/130969149/76c67526.pdfIn PDF document text
    • http://birepi.thefootprintsweleave.com/uploads/1/3/1/4/131437918/teneruwamisef.pdfIn PDF document text
    • http://bevasivip.holsteinstatetheatre.com/uploads/1/3/0/7/130739978/kidugofanuvonaxibemo.pdfIn PDF document text
    • http://files.broadbentinsurance.net/uploads/1/3/0/7/130774965/bebadewuvalo-zerufibozij-woferajid.pdfIn PDF document text
    • http://sibik.canberraplacentaservices.com/uploads/1/3/0/8/130874104/72ad87f223.pdfIn PDF document text
    • http://files.busnbreakfast.com/uploads/1/3/0/9/130970004/difijef.pdfIn PDF document text
    • http://files.orchardhillestate.com/uploads/1/3/0/7/130739892/gifoxuteruwi_tufovivurutoj_xuwelukepazetu_megovuxup.pdfIn PDF document text
    • http://files.jimenezhhc.com/uploads/1/3/0/8/130873826/japuwi.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/1/0460/2019/8559/files/labels_google_maps.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4134/1096/files/california_light_works_solarxtreme_250.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2153/5912/files/53859794454.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/5274/7937/files/88247800601.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0360/1308/files/99990834234.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/8595/7782/files/legaia_2_duel_saga_arts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/9437/9163/files/48629030685.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

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000639b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x639B 5392 bytes
SHA-256: b2836b09615cc71240f04b97b72e446b7936d580686ad79ad610121ba329bb45
font_01_sfnt_off000075e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75E6 11860 bytes
SHA-256: b74b1f8b522d44dd6548a1203a9c1e3dfaad66c84234a9428bc6fb5ba4ac523b

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