Malicious PDF — malware analysis report

Static analysis result for SHA-256 804fe6d555aab969…

MALICIOUS

PDF

59.5 KB Created: 2020-08-06 01:42:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c4893b052fd34bfc5fb018c0e491a259 SHA-1: b8bfee06800b47bea09a026d630290ece5adac9e SHA-256: 804fe6d555aab969e113305f362816f7ea836316d56ef5e0070322727487fbe9
154 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector, suggesting a phishing or scam attempt. The document body, though heavily obfuscated, contains text related to a "Cahier des charges biocoop 2020 pdf" and the malicious URL, indicating a lure to trick users into clicking the link. The presence of embedded URLs and the ML classifier's high confidence score support the malicious verdict.

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=cahier+des+charges+biocoop+2020+pdf
    • http://files.aandnlawn.com/uploads/1/3/0/7/130775475/4511354.pdf
    • http://files.kardholder.com/uploads/1/3/0/7/130740142/ramubitu_ronitibija_garofawig_mowoxewoveriroj.pdf
    • http://depajir.bthomasart.com/uploads/1/3/0/8/130874493/1809f81d64.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/2606/2239/files/21991361652.pdf
    • https://cdn.shopify.com/s/files/1/0431/9461/3924/files/78818674005.pdf
    • https://cdn.shopify.com/s/files/1/0431/4536/3610/files/51881652145.pdf
    • https://cdn.shopify.com/s/files/1/0429/1385/7692/files/55470465209.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37237973095.pdf
    • https://cdn.shopify.com/s/files/1/0434/4433/8838/files/data_warehouse_tutorialspoint.pdf
    • https://cdn.shopify.com/s/files/1/0430/6694/9786/files/mamadekuzonexe.pdf
    • https://cdn.shopify.com/s/files/1/0428/1594/6911/files/kixowozo.pdf
    • https://cdn.shopify.com/s/files/1/0433/4741/1096/files/install_cuda_ubuntu.pdf
    • https://cdn.shopify.com/s/files/1/0433/9915/1768/files/33104339143.pdf
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/13313718218.pdf
    • https://cdn.shopify.com/s/files/1/0429/2254/1209/files/lunirumibubenojoruzili.pdf
    • https://cdn.shopify.com/s/files/1/0436/0673/7053/files/44600263013.pdf
    • https://cdn.shopify.com/s/files/1/0429/3269/9295/files/attitude_scale_questionnaire.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_off0000a3ab.bin
238aef865f9520f4ac3a83f4a095b26bcba94fa757f6583cde8a60f7a106fa0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA3AB 5704 bytes
font_01_sfnt_off0000b712.bin
a6e389496fb7fa5d523b9468864482499544e93e9e210e924c1557b7900882ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB712 12712 bytes

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