Malicious PDF — malware analysis report

Static analysis result for SHA-256 abbe1ab6f4268076…

MALICIOUS

PDF

39.0 KB Created: 2020-07-20 04:45:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-07
MD5: d626a1e5a71945ce9d3ffc769c6df191 SHA-1: b43a9c71c38ebe122074e167fb0068ec1f18a59f SHA-256: abbe1ab6f42680765cc2e6235d405d903a14c5433247037c8db53d57d9981b64
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body appears to be garbled or truncated, but the presence of a link farm and a malicious redirector suggests an attempt to drive traffic to malicious infrastructure, possibly for SEO abuse or to serve further malware.

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=manuale%20digitale%20cd%20press%20clasa%207%20istorie In PDF document text
    • http://files.cyfairironmaidenslacrosse.org/uploads/1/3/0/7/130739883/ripejudunifudu.pdfIn PDF document text
    • http://files.airoilandlead.com/uploads/1/3/1/8/131856285/7692927.pdfIn PDF document text
    • http://files.thelastvilla.com/uploads/1/3/0/8/130813668/xamevet.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/1/0435/5712/6295/files/pesimemewi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5423/4785/files/8050108868.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8271/9127/files/15494923984.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8072/1311/files/88752286055.pdfIn PDF document text
    • https://detomanuz.files.wordpress.com/2020/06/medukogez.pdfIn PDF document text
    • https://modunopowo.files.wordpress.com/2020/06/zukujuxizowafabuxe.pdfIn PDF document text
    • https://gijejipetig.files.wordpress.com/2020/07/33811492496.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7039/8372/files/gevavujigalojixakupuke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9440/8357/files/64360537340.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2843/8427/files/21618218053.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/12410546401.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/3183641906.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4887/6702/files/19519658525.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1378/2173/files/kilakaze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1086/7871/files/86813404630.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8699/5863/files/78996656255.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 3

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_off00005873.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5873 5208 bytes
SHA-256: 06ebcf2a4b80129fa5aee7ed2b66f9f21440252807443ddda0c9e2cc67b5ef6e
font_01_sfnt_off00006a38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A38 10612 bytes
SHA-256: ec89a7702edb48024cd0ccfed026ac3b9544165baed5946fda7b03b8656b7a1d

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