Malicious PDF — malware analysis report

Static analysis result for SHA-256 26d00328e2a1b26e…

MALICIOUS

PDF

44.3 KB Created: 2020-08-08 08:14:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b7c4707631d3e4db5236ed9d0458d2b SHA-1: e6b747699456ad6195fbc1d53196a93ba3bb10f8 SHA-256: 26d00328e2a1b26e48f861e7e3db8748a2f63100327a336121ba491bb849361a
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass external link farm, with the primary link directing to a known malicious redirector. The document body, though heavily obfuscated, contains the same redirector URL. This indicates the primary purpose is to redirect the user to malicious infrastructure, likely for further exploitation or phishing.

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.cc/pify?keyword=estilo+de+aprendizaje+auditivo+pdf
    • http://files.perkysicecream.com/uploads/1/3/1/6/131637137/fawamarumo.pdf
    • http://files.level2rak.com/uploads/1/3/0/9/130969768/6346045.pdf
    • http://files.touchofheavenranch.com/uploads/1/3/0/7/130775980/xiwukubafu_budivubalemuvoz_puvalo_gesovixib.pdf
    • https://cdn.shopify.com/s/files/1/0429/8860/1503/files/24141670283.pdf
    • https://cdn.shopify.com/s/files/1/0430/7091/4717/files/70845830436.pdf
    • https://cdn.shopify.com/s/files/1/0427/8734/0454/files/61326040628.pdf
    • https://cdn.shopify.com/s/files/1/0431/8245/7000/files/gujarati_matrimonial_biodata_format.pdf
    • https://cdn.shopify.com/s/files/1/0432/2181/1364/files/stardew_valley_bee_house_layout.pdf
    • https://cdn.shopify.com/s/files/1/0431/8891/2290/files/pixejabimekuvovoxe.pdf
    • https://cdn.shopify.com/s/files/1/0429/7257/7946/files/50482898261.pdf
    • https://cdn.shopify.com/s/files/1/0434/3031/4151/files/adobe_reader_apk_pure.pdf
    • https://cdn.shopify.com/s/files/1/0431/4519/9784/files/timegewo.pdf
    • https://cdn.shopify.com/s/files/1/0451/3647/8361/files/the_ballad_of_reading_gaol_download.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/
    • https://cdn.shopify.com/s/files/1/0431/4519/9784/files/timegew

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b35.bin
16502f6058c43c82f459d623cc7de2f8f493bd672a497ceae22a993557a6a583
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B35 5180 bytes
font_01_sfnt_off00007cfd.bin
76963a5b6040e0d162a8710822da06b006b30a70654e2248540624dd9cb6ebd2
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CFD 11880 bytes