Malicious PDF — malware analysis report

Static analysis result for SHA-256 c045a444d0455809…

MALICIOUS

PDF

45.1 KB Created: 2020-07-08 20:29:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-08-10
MD5: 95eed074b1f66caa4d061714412b3890 SHA-1: 3a736465dec7d1bcbbab817c0a304a87707c7034 SHA-256: c045a444d04558093e16cb48c315bb7695a1aafce0240a103f15314e3020a3c2
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic. One of these links, https://ttraff.com/wb?keyword=iringa%20region%20profile%20pdf, is flagged as a malicious redirector. The document body contains garbled text but includes the same URL, suggesting a lure or redirection mechanism. The primary attack pattern involves leveraging these links for malicious redirection or SEO manipulation.

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.com/wb?keyword=iringa%20region%20profile%20pdf In PDF document text
    • http://files.tgja.org/uploads/1/3/1/6/131606335/lerenakega.pdfIn PDF document text
    • http://files.vanessasteck.com/uploads/1/3/1/8/131871414/9859648.pdfIn PDF document text
    • http://files.refreshglobalnfp.org/uploads/1/3/2/8/132815960/6908795.pdfIn PDF document text
    • http://files.grandfamilyeyecare.com/uploads/1/3/0/8/130874411/49d13ca129.pdfIn PDF document text
    • http://files.strayashop.com/uploads/1/3/1/0/131070289/6853560.pdfIn PDF document text
    • http://files.westsoundsportswear.com/uploads/1/3/1/0/131070485/zisadunef.pdfIn PDF document text
    • http://files.narrowgatec.com/uploads/1/3/0/7/130776575/jutulogufaw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://jusodewajage.files.wordpress.com/2020/06/konizitorabozikago.pdfIn PDF document text
    • https://xidufunamopa.files.wordpress.com/2020/06/jijogijon.pdfIn PDF document text
    • https://lebetamawif.files.wordpress.com/2020/07/16798519150.pdfIn PDF document text
    • https://mazagutote.files.wordpress.com/2020/06/jemanipurowadapesadudos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20424522606.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/texirid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rofan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rinavupomun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dagezaluvonanapukinuwit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kewosa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61411835552.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_off00007529.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7529 4676 bytes
SHA-256: 115af1be626995a5b5231fea319582b4edfdc9c9a21eaed72f20e28a5e18bead
font_01_sfnt_off00008501.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8501 10060 bytes
SHA-256: 73bb8932a06f6b6dcbcccc6750de0db4bff72138c2f0275611bb5e46f92ec6a1

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