Malicious PDF — malware analysis report

Static analysis result for SHA-256 efb4021934178edf…

MALICIOUS

PDF

48.7 KB Created: 2020-08-10 12:41:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 4fac24001bc3d0b7c2af085c6cf3e75b SHA-1: bb66131113ad0dd4f33f6479b62794c78e64da40 SHA-256: efb4021934178edf49e34b84c81686fa24f8b7441abaa484a61bb122a1f119e8
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.com/pify?keyword=que+es+la+psicologia+segun+autores+pdf In PDF document text
    • http://files.unseenseven.org/uploads/1/3/2/7/132710748/tazuzexutuxu.pdfIn PDF document text
    • http://files.northstarcamaroclub.com/uploads/1/3/2/3/132302787/zabaxu.pdfIn PDF document text
    • http://files.ellenhanley.com/uploads/1/3/1/4/131437593/2051962.pdfIn PDF document text
    • http://files.coloradomomentum.org/uploads/1/3/0/7/130738801/bonurofuduw-fiwafafala-tidurokavilove.pdfIn PDF document text
    • http://files.avoiceinthewild.org/uploads/1/3/0/7/130739974/bivokafimukazol.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/1/0428/4992/7327/files/98330989118.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4184/0552/files/2331686401.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2071/2098/files/66203748786.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0608/2717/files/zewofobimesed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0981/7251/files/41949848397.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/16481260084.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84113106953.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/muludev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3314/1149/files/36830231850.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7298/8071/files/voximukifidokajokomafuvo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1157/8776/files/24453107488.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9538/2429/files/54873597219.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 5

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E6D 5268 bytes
SHA-256: f2591735c79abda6ae4dcd8b08c46e0379414a0be1196f79cb67f374148da248
font_01_sfnt_off00008061.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8061 11624 bytes
SHA-256: 19cd6c6f92c1f98a0e408573e513c44460e2f60bac3e6c5ef8b1555b0497b64a
font_02_sfnt_off0000a5bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA5BC 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

Open this report in the interactive analyzer, or submit your own file for analysis.