Malicious PDF — malware analysis report

Static analysis result for SHA-256 44fb23701f955634…

MALICIOUS

PDF

42.0 KB Created: 2020-08-10 08:17:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bb960d4262b80adb717d1258f0b07975 SHA-1: f4c1834aaf7f73647f1b57eebabf09162ab6e7c1 SHA-256: 44fb23701f9556342880c0cebab2758d4f32852e21682d8cf8fe962e83406b6d
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=analisi+logica+semplificata+pdf', which is flagged as malicious. This suggests the PDF is designed to lure users to a malicious site, likely for further exploitation or phishing. The presence of many links to Shopify domains, while individually benign, contributes to a link farm pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=analisi+logica+semplificata+pdf
    • http://files.strandridge.com/uploads/1/3/1/8/131856276/fubifajebo-sesarikakonoren-lalakos-petegizupuzew.pdf
    • http://files.thecuriouscatgiftshop.com/uploads/1/3/2/6/132681596/puwakir.pdf
    • http://files.totsandtumblers.com/uploads/1/3/0/8/130873983/rubebipow.pdf
    • http://tawiwu.aycreative.co/uploads/1/3/1/1/131164250/zuburovadokobaripimu.pdf
    • http://files.caricatureparties.com/uploads/1/3/0/8/130874480/xojatoloximane_zugokudabisaruw_jetizekov.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/62042090741.pdf
    • https://cdn.shopify.com/s/files/1/0429/1746/2182/files/41781755794.pdf
    • https://cdn.shopify.com/s/files/1/0430/0704/9877/files/xelexuwimovidujuv.pdf
    • https://cdn.shopify.com/s/files/1/0434/9257/3334/files/lizifosajokum.pdf
    • https://cdn.shopify.com/s/files/1/0438/0301/7378/files/wufosuwisafawijaloseg.pdf
    • https://cdn.shopify.com/s/files/1/0433/6805/4940/files/traktor_scratch_pro_manuale_italiano.pdf
    • https://cdn.shopify.com/s/files/1/0431/6676/1120/files/21556514711.pdf
    • https://cdn.shopify.com/s/files/1/0434/3159/2092/files/general_affidavit_form_free.pdf
    • https://cdn.shopify.com/s/files/1/0429/8915/8554/files/80168336175.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75609531209.pdf
    • https://cdn.shopify.com/s/files/1/0435/7311/7096/files/kenefeseg.pdf
    • https://cdn.shopify.com/s/files/1/0436/6182/0054/files/sefoxurizupu.pdf
    • https://cdn.shopify.com/s/files/1/0437/7323/1258/files/guduvigimojagigaga.pdf
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/retexegodubi.pdf
    • https://cdn.shopify.com/s/files/1/0437/2591/4277/files/pdf_to_word_converter_offline_free_download_for_windows_8.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_off000063fa.bin
ddf2691213aae16edb4f059cf7334aa38237c0071759d2d33de2c0663fb8c2f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x63FA 5368 bytes
font_01_sfnt_off00007639.bin
8143e5f6ad5cf155199fde1fc3f15fac122ccc9d53a750fe8fda5d7fbd0f987b
pdf-font-stream PDF embedded font (sfnt) at offset 0x7639 11276 bytes