Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c44a6a91e570499…

MALICIOUS

PDF

56.7 KB Created: 2020-10-01 16:54:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: c2e79f5b547b98816d5c34dc348473fd SHA-1: 7a89ad41f489184b10c510f86df18e28b519d594 SHA-256: 1c44a6a91e570499e85529b14996cee5e4c61f297930550cc25f6dc8a370b7e2
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://gettraff.ru/strik?keyword=workforce+planning+case+study+pdf In PDF document text
    • http://files.southwatercommunitycentre.org/uploads/1/3/0/8/130814161/18efdbef7.pdfIn PDF document text
    • http://sakejenok.tollresidentgroup.com/uploads/1/3/0/8/130814011/wonejanesix.pdfIn PDF document text
    • http://ruvurupi.gastrocycling.com/uploads/1/3/1/3/131380485/muzepasebez.pdfIn PDF document text
    • http://pevugibox.falcontechies.com/uploads/1/3/2/8/132814930/bafigobatorufuge.pdfIn PDF document text
    • http://files.casinographics.com/uploads/1/3/2/7/132740606/zetuvomu_bedadibu_selapeli.pdfIn PDF document text
    • http://files.rosminicentrewisbech.org/uploads/1/3/0/7/130776594/fenareva.pdfIn PDF document text
    • http://files.braveministry.com/uploads/1/3/0/7/130775387/kotajaxuxonoz_bulusu_befororu.pdfIn PDF document text
    • https://site-1037274.mozfiles.com/files/1037274/kumogo.pdfIn PDF document text
    • https://site-1039645.mozfiles.com/files/1039645/8791196336.pdfIn PDF document text
    • https://site-1038868.mozfiles.com/files/1038868/kozikagixij.pdfIn PDF document text
    • https://site-1037129.mozfiles.com/files/1037129/pidogamifadutumi.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/1/0430/7710/7865/files/your_organization_requires_a_new_pin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2100/8548/files/ideal_61-310_continuity.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7800/6437/files/how_to_learn_sanskrit_easily.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/6769/9111/files/keseroxudufe.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 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_off00009fa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FA8 5500 bytes
SHA-256: 0cb9015b0a224b2689e1473e5c34d2f7561b68ca01311b7418c9af2bafc9ecbd
font_01_sfnt_off0000b28b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB28B 10192 bytes
SHA-256: 2338ff540fbf8b50b3bdbfd77a4b5f0a44d045ab56a5902b9f4d42ed282cc6f6

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