Malicious PDF — malware analysis report

Static analysis result for SHA-256 888fd38356408093…

MALICIOUS

PDF

45.5 KB Created: 2020-07-31 09:00:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: afeb57340f8733703facfe2a4cedc8fc SHA-1: 40875c1f6d5351b71703e2c08adf00f1bcbe6877 SHA-256: 888fd38356408093c068025ecb8310fa8941f337311c38b75f95f88614ce5a39
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, identified as a 'PDF SEO Link Farm', directing to various external PDF files. One of these links, 'https://ttraff.cc/pify?keyword=agonistas+y+antagonistas+dopaminergicos+pdf', is flagged as a malicious redirector. This suggests the document's primary purpose is to redirect users to potentially harmful websites, possibly for advertising fraud or to serve further malicious content.

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.cc/pify?keyword=agonistas+y+antagonistas+dopaminergicos+pdf
    • http://files.mariecharpentier.net/uploads/1/3/1/4/131483019/batipaxadas.pdf
    • http://files.jim-caruso.com/uploads/1/3/0/7/130738852/bolafajabelapimet.pdf
    • http://files.ottawadima.com/uploads/1/3/1/3/131381464/fdd33d77405a.pdf
    • http://files.getnoticedartdesigns.com/uploads/1/3/0/7/130775813/4512414.pdf
    • http://files.spinecarechiropractic.net/uploads/1/3/1/3/131384018/30437.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/77363931764.pdf
    • https://cdn.shopify.com/s/files/1/0433/9793/9349/files/rogexejudegofibito.pdf
    • https://cdn.shopify.com/s/files/1/0431/1102/2756/files/fozujonodozuru.pdf
    • https://cdn.shopify.com/s/files/1/0433/7706/6135/files/75040281627.pdf
    • https://cdn.shopify.com/s/files/1/0437/8283/2280/files/femudixubemiwowusi.pdf
    • https://cdn.shopify.com/s/files/1/0433/7546/0517/files/43680171325.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51507598499.pdf
    • https://cdn.shopify.com/s/files/1/0433/7428/0855/files/51219597880.pdf
    • https://cdn.shopify.com/s/files/1/0434/4116/0344/files/xabofosigefuza.pdf
    • https://cdn.shopify.com/s/files/1/0438/2477/5330/files/dotulopeloju.pdf
    • https://cdn.shopify.com/s/files/1/0429/9295/9642/files/34127482567.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_off000071cb.bin
69e078cc5f6e9b9d8eb41fa9f6f5fd864be54417d105f5d95ffb16a575623c2e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71CB 5324 bytes
font_01_sfnt_off000083d7.bin
5b5a0de31f06e61daea637d5e31159afcfec2d320f8f0a63bdf61b1bb579e9a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83D7 10644 bytes

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