Malicious PDF — malware analysis report

Static analysis result for SHA-256 9be860ff0022223c…

MALICIOUS

PDF

40.0 KB Created: 2020-07-08 19:46:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: 60adbbfeac417ef3fa08a40de545856c SHA-1: 35ca81974e0ef49d0f208a3ab91f328306021f22 SHA-256: 9be860ff0022223cd6ff0e933589819dfe2800f4c7a8dc18204228f7746891c3
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link

The PDF contains a large number of embedded links, many of which point to domains associated with link farms and redirectors. The primary lure appears to be 'Xps to pdf mac os x', directing users to a malicious redirector at ttraff.cc. This suggests a phishing or scam campaign aiming to redirect users to malicious 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=xps%20to%20pdf%20mac%20os%20x In PDF document text
    • http://files.sandrapeut.com/uploads/1/3/1/4/131437778/nivetib.pdfIn PDF document text
    • http://files.impunity.site/uploads/1/3/2/6/132681204/lefopogi.pdfIn PDF document text
    • http://files.nokillhuntsville.com/uploads/1/3/1/4/131455883/jalupi.pdfIn PDF document text
    • http://files.ambassadormoris.com/uploads/1/3/1/3/131379320/6786417.pdfIn PDF document text
    • http://files.vineyardch.org/uploads/1/3/1/4/131437648/kizovexona-tidegumisamip.pdfIn PDF document text
    • http://files.phstravelclub.org/uploads/1/3/0/7/130739120/nibabiboj-zawaxatevifag-finalirut.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://sigegajif.files.wordpress.com/2020/06/jifegurutobisime.pdfIn PDF document text
    • https://bavarapa.files.wordpress.com/2020/06/39243320648.pdfIn PDF document text
    • https://worovelelosu.files.wordpress.com/2020/06/91954564521.pdfIn PDF document text
    • https://sezorez.files.wordpress.com/2020/06/21733782512.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/28391359898.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/21533622499.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/54313135065.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_off00005e95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E95 4732 bytes
SHA-256: 09f7d308f3acaacd30fad07deef22a118d785e2871367f70e75a9f6c6995bca0
font_01_sfnt_off00006ea5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EA5 10884 bytes
SHA-256: d422a1a7fd47a3979b08cdafbe709c8a9a3c9a5b40c3183b111b91e13e0c2442

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