Malicious PDF — malware analysis report

Static analysis result for SHA-256 e86e6b83b81d2556…

MALICIOUS

PDF

41.2 KB Created: 2020-07-09 14:50:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: 54974094505e965cd8b75bb11ec25064 SHA-1: 62e30ba9183be45b0d5e48520eb6a7891d88ae34 SHA-256: e86e6b83b81d255686553115fed7b2965d9fb14980343fd86db159a8aa209740
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a deceptive document body masquerading as an oven manual, which includes a link to a known malicious redirector. The file also hosts a large number of links to other PDF files, likely for SEO manipulation or to distribute further malicious content. The primary malicious link is https://ttraff.cc/wb?keyword=belling%20oven%20owners%20manual, which redirects to potentially harmful sites.

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.cc/wb?keyword=belling%20oven%20owners%20manual In PDF document text
    • http://files.cathstonardtextilearts.com/uploads/1/3/1/8/131872096/2f92002681.pdfIn PDF document text
    • http://files.smartdesigns365.com/uploads/1/3/1/3/131379663/gesogotavetem.pdfIn PDF document text
    • http://files.3gsstaystrong.com/uploads/1/3/2/6/132695467/8810219.pdfIn PDF document text
    • http://files.headtotoeoldschool.com/uploads/1/3/1/1/131163957/d5410eae4.pdfIn PDF document text
    • http://files.damselflyyogaspa.com/uploads/1/3/0/8/130874647/nikowojorezak.pdfIn PDF document text
    • http://files.drlesgarson.com/uploads/1/3/0/7/130776123/1719573.pdfIn PDF document text
    • http://files.layover-tour-beijing.com/uploads/1/3/2/6/132680852/xujumeteve_ximavoboxeb_dizelipesi.pdfIn PDF document text
    • http://files.rivermenrodandgunclub.com/uploads/1/3/2/3/132302973/nomegariwutok-wibiwu-visinatixubuj-sojimuta.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://divosurepewa.files.wordpress.com/2020/07/safaxudim.pdfIn PDF document text
    • https://gabotisiv.files.wordpress.com/2020/07/45230495116.pdfIn PDF document text
    • https://vutokavajino.files.wordpress.com/2020/07/bikitoximosi.pdfIn PDF document text
    • https://sifizuxu.files.wordpress.com/2020/07/rimijazejerisataxelufaduv.pdfIn PDF document text
    • https://kixudufeluj670282504.files.wordpress.com/2020/07/27191315536.pdfIn PDF document text
    • https://jopokujepe.files.wordpress.com/2020/06/12662860779.pdfIn PDF document text
    • https://lokewigokun.files.wordpress.com/2020/07/81650661539.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/83971047952.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/60359225188.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/3152232763.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/90442425312.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000643f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x643F 5008 bytes
SHA-256: 4b8344066dbeabf6d3adba11ed57ae9e54ac63acc75e55c5b84fb3989a53141f
font_01_sfnt_off00007538.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7538 10264 bytes
SHA-256: ea10318aebee87b3e1463c37901a11ceea623a5ec5fb8e94e0beb1c86587a88e