Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ca3b2101dc9353d…

MALICIOUS

PDF

40.2 KB Created: 2020-07-16 20:43:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-04
MD5: d761c99796d5239b4b9991e9f52ae2ce SHA-1: f8fccff679db2fa6fc5cc8d936538ac97687fbd1 SHA-256: 7ca3b2101dc9353d95fceb1ab71d715548cdbfa191b8ca3f21cec053354afc7f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document is classified as malicious due to its use of a link farm and redirector infrastructure to lure victims. The document presents itself as a service manual, likely to entice downloads of further malicious content. The embedded URLs point to known malicious redirectors and a large number of SEO-optimized PDF links, indicating a phishing or scam attempt.

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.ru/wb?keyword=ultrasonix%20sonix%20sp%20service%20manual In PDF document text
    • http://files.hannahlynchphoto.com/uploads/1/3/1/4/131453355/fomuwowiwozi.pdfIn PDF document text
    • http://files.anthonyescobar.org/uploads/1/3/1/4/131453084/4554028.pdfIn PDF document text
    • http://files.pachecoathletics.com/uploads/1/3/1/6/131636941/tikazadesomo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://mubupowe.files.wordpress.com/2020/06/72971658331.pdfIn PDF document text
    • https://jadokabise.files.wordpress.com/2020/06/13281238805.pdfIn PDF document text
    • https://lanotojuvon.files.wordpress.com/2020/07/82942356769.pdfIn PDF document text
    • https://wuwiwil.files.wordpress.com/2020/06/lewevovaredozedala.pdfIn PDF document text
    • https://suwedogop.files.wordpress.com/2020/07/59244759861.pdfIn PDF document text
    • https://nilunaxe.files.wordpress.com/2020/06/66702927811.pdfIn PDF document text
    • https://juzakiwari.files.wordpress.com/2020/06/selufanenilijilajar.pdfIn PDF document text
    • https://mitokoru.files.wordpress.com/2020/06/kibogaxedawinusufafusasi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0352/5790/files/83494065289.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/gizomiwag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8094/0709/files/lulizusarosalawodop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9964/4314/files/49467169164.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81256704061.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/19252536586.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kiwovanigefuminif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6318/1463/files/rezewulopadejog.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_off000061f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61F9 5080 bytes
SHA-256: 02aa7e7871f591cefb056d726f92f38dd18cec0bcfc97224028ea107de834da5
font_01_sfnt_off00007332.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7332 9520 bytes
SHA-256: 47c5d4fa1c3a269d8a31142fdad58c48ff581f5aa3a498af42d32cd891089d48

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