Malicious PDF — malware analysis report

Static analysis result for SHA-256 6264456c2ef1c593…

MALICIOUS

PDF

43.9 KB Created: 2020-08-09 05:03:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2b47830e68f12596ee2bd03cab127e9d SHA-1: 5418d7bdf689ab7600283e6013ba56cc21c1882a SHA-256: 6264456c2ef1c593114060006c5a9813a43373df034ce92baddc198c6054f20b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous embedded links, many of which point to a link farm designed for SEO manipulation. One prominent link, 'https://ttraff.ru/pify?keyword=bathroom+design+book+pdf', is identified as a malicious redirector. The document body, though partially corrupted, contains text suggesting it is disguised as a book PDF, likely to entice users to click the malicious link. The ML classifier also strongly indicated maliciousness.

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.ru/pify?keyword=bathroom+design+book+pdf
    • http://files.kayalaterman.com/uploads/1/3/2/7/132710694/leviles.pdf
    • http://wewuguruk.abstractdreamdesigns.com/uploads/1/3/1/0/131070581/1bd1a497a29e8.pdf
    • http://files.rlasfoundation.com/uploads/1/3/2/7/132710601/likopuzijujaga_folemetusasa_kinodofodotid.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/3182/9412/files/acidosis_metabolica_hipercloremica.pdf
    • https://cdn.shopify.com/s/files/1/0433/6913/6280/files/97457258896.pdf
    • https://cdn.shopify.com/s/files/1/0430/1655/2605/files/82028543426.pdf
    • https://cdn.shopify.com/s/files/1/0429/7523/2153/files/bible_numerology.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/88047610161.pdf
    • https://cdn.shopify.com/s/files/1/0437/5838/7349/files/24477720971.pdf
    • https://cdn.shopify.com/s/files/1/0431/5932/2773/files/siwijifowitububusozexoko.pdf
    • https://cdn.shopify.com/s/files/1/0435/8592/9375/files/tkinter_text_box.pdf
    • https://cdn.shopify.com/s/files/1/0427/9956/2911/files/29877646242.pdf
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/pharmacology_mnemonics_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/7426/4993/files/42389230160.pdf
    • https://cdn.shopify.com/s/files/1/0437/0006/0310/files/toginabaferem.pdf
    • https://cdn.shopify.com/s/files/1/0433/8748/6358/files/adding_and_subtracting_polynomials_word_problems.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b52.bin
5413d5aaef97ec9e14a35f19ed41bd60e133ac2a55272109d6dc8b8bda42e46c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B52 5676 bytes
font_01_sfnt_off00007e6c.bin
4dc00b6761df181df04b5e42d5c8868b98f813203a70337574a83a8be501d931		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E6C 10700 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.