Malicious PDF — malware analysis report

Static analysis result for SHA-256 83d8ad7779cccea0…

MALICIOUS

PDF

43.6 KB Created: 2020-10-29 21:09:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 86b7b20026f69e5f39df3662c75a514a SHA-1: 459a6640cfd0cba413c830a500fe5d6f203623fb SHA-256: 83d8ad7779cccea0fd827a8ea4148ea7ef7b0d8b385d64904c7928f181677d8f
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/aws?keyword=the+fresh+prince+of+bel+air+lyrics+quiz In PDF document text
    • https://sonefuvik.weebly.com/uploads/1/3/4/3/134325549/6758584.pdfIn PDF document text
    • https://xigodawi.weebly.com/uploads/1/3/4/4/134464905/9d453da16.pdfIn PDF document text
    • https://gemaxudemaxepeb.weebly.com/uploads/1/3/1/0/131070646/bopawibu.pdfIn PDF document text
    • https://rofofomigedug.weebly.com/uploads/1/3/4/4/134486696/sajav_gurex_parodiduf.pdfIn PDF document text
    • https://xurolimusogisuw.weebly.com/uploads/1/3/4/3/134395808/488773.pdfIn PDF document text
    • https://wevinavuligi.weebly.com/uploads/1/3/4/5/134505150/2481117.pdfIn PDF document text
    • https://jikesekija.weebly.com/uploads/1/3/4/3/134367489/726ac7f3695e.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006890.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006890.bin)
    • https://cdn.shopify.com/s/files/1/0483/2208/5027/files/84502309950.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/7831/2625/files/45030264192.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9514/6139/files/silkair_studio_app_for_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8155/8933/files/17521009821.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec11b333-a5f7-481d-9208-1c4ce19d3943/31773840383.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/8670/1238/files/possessive_pronouns_worksheet_grade_4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/2530/9108/files/gb_insta_download_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/6875/4594/files/miwovapoditawaxapitax.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 extracted file (font_00_sfnt_off00006890.bin)

Related samples 8

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_off00006890.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6890 5472 bytes
SHA-256: 9b2f33d0643d2731be36a2f5a6e360b1e2ca9b18b535a5eb11b026bcadaa3a94
font_01_sfnt_off00007b34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B34 11372 bytes
SHA-256: bf34eef858ab61cb072c35c933b7e453c7eba25d72f092a5467e121d67f4b20c

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