Malicious PDF — malware analysis report

Static analysis result for SHA-256 e717951d1fdffab1…

MALICIOUS

PDF

55.5 KB Created: 2020-07-27 04:29:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-07
MD5: 9fe5166e7388d9bc220814339205bbad SHA-1: ba338e59d5b7a55fb4efee5eae766c519514789f SHA-256: e717951d1fdffab1c1f448c1d27e2f5531673041435fac83e7a7d86464f4fbde
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wb?keyword=huawei%20smartlogger%20manual'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, including one to 'https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kikurum.pdf'. The ML classifier also strongly flagged this PDF as malicious. The document body appears to be obfuscated or corrupted, preventing a clear understanding of its content beyond metadata.

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.cc/wb?keyword=huawei%20smartlogger%20manual In PDF document text
    • http://files.crossingbridgeslifecoaching.com/uploads/1/3/1/4/131453034/2561475.pdfIn PDF document text
    • http://files.schillingerbassoon.com/uploads/1/3/1/4/131406831/toxidikufaxufa.pdfIn PDF document text
    • http://files.tywi.org/uploads/1/3/1/1/131163846/381a35c.pdfIn PDF document text
    • http://files.evil-dog.com/uploads/1/3/0/7/130775470/lotolamuzebiw.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/1/0433/0687/7080/files/kikurum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9461/4940/files/neraforotegababepugili.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4492/0734/files/setal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7311/9143/files/73001726886.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8918/0310/files/17998514528.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9731/7783/files/11604950904.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3802/3592/files/49596637482.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9802/9733/files/9360554493.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6825/2565/files/29516251894.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/23007644280.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9861/9557/files/witozuvojewoxusimeze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7173/3917/files/47679528854.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8566/8255/files/vuxugavopezofelejofulosa.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009c2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C2E 4940 bytes
SHA-256: 30ed4679cece7f0a2c771cdd957bdf9120334c94231d13514e0c8b4caf879c8f
font_01_sfnt_off0000aceb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xACEB 10432 bytes
SHA-256: 277b11816ed13a78a8671cc5020fbc3cda886bf61a8ac78fe345693a65c7eedd

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