Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c5774dc6f874b22…

MALICIOUS

PDF

40.0 KB Created: 2020-08-15 00:11:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 73fa6e5978d3ef7c0f9a2f29849dd8d9 SHA-1: e9dbc7f22b57520451cb72dad0ae7b41e20e5aeb SHA-256: 6c5774dc6f874b22c3ec61058dedeabb312eaf87e46c7ca1409ececa3aa6c43a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious due to its structure, which includes a large number of embedded links pointing to external resources. One of these links, https://ttraff.ru/pify?keyword=humanist+ceremony+booklet+template, is flagged as a known malicious redirector. The document's content and the presence of numerous links suggest an attempt to direct users to potentially harmful websites, likely for phishing or malware distribution.

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=humanist+ceremony+booklet+template
    • http://saruseveb.subseasales.com/uploads/1/3/0/7/130776321/noxumobezofepapelabe.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/0832/7829/files/xovituxoporabenimexe.pdf
    • https://cdn.shopify.com/s/files/1/0427/5830/8006/files/sistema_biela_manivela.pdf
    • https://cdn.shopify.com/s/files/1/0428/6310/0070/files/tifawifugazirafenur.pdf
    • https://cdn.shopify.com/s/files/1/0429/3813/8783/files/16444572501.pdf
    • https://cdn.shopify.com/s/files/1/0438/1986/0125/files/cooper_lighting_apel.pdf
    • https://cdn.shopify.com/s/files/1/0427/8868/3932/files/totigifo.pdf
    • https://cdn.shopify.com/s/files/1/0434/8415/1974/files/chrome_custom_css.pdf
    • https://cdn.shopify.com/s/files/1/0437/6828/3298/files/learning_and_development_specialist_job_description.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/7082322425.pdf
    • https://cdn.shopify.com/s/files/1/0439/5443/8302/files/86255810626.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_off00005f78.bin
e63d54e05a00bfc1d51827d95c590a2ca3bd28eb665eb2b85ffc09a1b1b2ed95
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F78 5348 bytes
font_01_sfnt_off00007185.bin
9f80c142b98918b672205ec12101f94ae43c1eb259849323a573a666e9546cd7
pdf-font-stream PDF embedded font (sfnt) at offset 0x7185 9832 bytes