Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfeb4a3001a425ea…

MALICIOUS

PDF

39.6 KB Created: 2020-08-18 23:55:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d44c2e2f26b2fdd7714791f2d369f6ca SHA-1: 70d78ac107cf6fb701b6a3ee40e7fd47b218104a SHA-256: dfeb4a3001a425ea508d2a2fb737b3d88d9cd23ffa49d11f2d6648a1b28233f0
152 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with one heuristic specifically identifying it as a PDF link farm. The primary malicious URL, 'https://ttraff.com/pify?keyword=orari+messe+casinalbo+di+formigine', is flagged as a known malicious redirector. While many other links point to Shopify, the presence of the malicious redirector and the sheer volume of links suggest a coordinated effort to distribute malicious content or manipulate search results.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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/pify?keyword=orari+messe+casinalbo+di+formigine
    • http://lavujat.coleenthoulihan.com/uploads/1/3/1/8/131871721/xazuligesisof_vexikudomiro.pdf
    • http://files.tuxpeoplesmusic.com/uploads/1/3/0/8/130873715/5048689.pdf
    • https://cdn.shopify.com/s/files/1/0431/4172/6370/files/kavulexusemosi.pdf
    • https://cdn.shopify.com/s/files/1/0434/4899/1910/files/free_to_word_converter_arabic_support.pdf
    • https://cdn.shopify.com/s/files/1/0428/9350/8771/files/33583184507.pdf
    • https://cdn.shopify.com/s/files/1/0439/4981/8024/files/pumafamixumakome.pdf
    • https://cdn.shopify.com/s/files/1/0436/6984/8217/files/actonel_150_mg_bula.pdf
    • https://cdn.shopify.com/s/files/1/0431/0745/1029/files/bulletin_de_salaire_vierge_2020.pdf
    • https://cdn.shopify.com/s/files/1/0432/1758/4283/files/65242129297.pdf
    • https://cdn.shopify.com/s/files/1/0432/7754/9726/files/fupovoguvafakususinoboze.pdf
    • https://cdn.shopify.com/s/files/1/0431/9769/4109/files/71206910535.pdf
    • https://cdn.shopify.com/s/files/1/0428/8475/9711/files/ethical_dilemma_in_research.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000057d3.bin
7a340ad0d73e314bb9809e92e36c46e39968ff04dec83624a03cbe152076c697
pdf-font-stream PDF embedded font (sfnt) at offset 0x57D3 5508 bytes
font_01_sfnt_off00006a68.bin
e64a9e2505ca313b735f648fcc4624e9d33b25550ebc5c8f64dd3c7fa4bf2dc5
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A68 12648 bytes