Malicious PDF — malware analysis report

Static analysis result for SHA-256 720fc3306a7b70d9…

MALICIOUS

PDF

33.5 KB Created: 2020-08-06 22:05:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d5d61bca00c0cc77eb646418139795fc SHA-1: bc5da8d1ebaab98b9577b042660839577cfcb656 SHA-256: 720fc3306a7b70d98a6c96d84a4aa3fe7801ab1bd8ea80441c8c1ba4fee9c529
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm and a redirector to malicious infrastructure, indicating a phishing or scam attempt. The embedded URL 'https://ttraff.cc/pify?keyword=bearing+man+catalogue+pdf' is a critical finding, suggesting the document is designed to lead users to harmful content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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/pify?keyword=bearing+man+catalogue+pdf
    • http://files.connectivityusa.net/uploads/1/3/1/6/131637038/juburevevunexo-kimedinusilir-poluxev.pdf
    • http://files.jeanisaacson.com/uploads/1/3/1/8/131856158/nopefenelato.pdf
    • http://files.ccnaacademy.com.au/uploads/1/3/0/7/130739996/77c436.pdf
    • http://files.speakeasyleather.com/uploads/1/3/1/0/131070611/1018784.pdf
    • http://files.locomotiveespresso.com/uploads/1/3/0/7/130738951/dipopejazavese-kimidinor-wixesa-datojufoxoj.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/5249/1159/files/35157052671.pdf
    • https://cdn.shopify.com/s/files/1/0428/9921/0407/files/74937124326.pdf
    • https://cdn.shopify.com/s/files/1/0433/5288/3352/files/64908066248.pdf
    • https://cdn.shopify.com/s/files/1/0428/0729/6163/files/gutetamawedujek.pdf
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/78547652605.pdf
    • https://cdn.shopify.com/s/files/1/0434/4764/8406/files/30982757579.pdf
    • https://cdn.shopify.com/s/files/1/0435/2638/9912/files/sunesukuxivojedo.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0234/files/xuxigilufudugi.pdf
    • https://cdn.shopify.com/s/files/1/0435/7806/5055/files/sekuvexorilape.pdf
    • https://cdn.shopify.com/s/files/1/0436/0133/0339/files/40256967141.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004461.bin
8531810b561dda8c1550ea59fd8ebb9378c6115be5779c57ea2cef6b51a31b1f
pdf-font-stream PDF embedded font (sfnt) at offset 0x4461 5344 bytes
font_01_sfnt_off0000567e.bin
ab3a902657bfbff1fe5d07f9a604dcc3f2a5873fa0242a1b190b2e94b61db723
pdf-font-stream PDF embedded font (sfnt) at offset 0x567E 10328 bytes