Malicious PDF — malware analysis report

Static analysis result for SHA-256 df1e012e99fc576a…

MALICIOUS

PDF

41.4 KB Created: 2020-08-26 21:41:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3bc0fa7dd3f76efa147ce53723ef03f1 SHA-1: d204ebad0bf271e3718a96b6f169a302374089c3 SHA-256: df1e012e99fc576abb199c85d3ca7f8301d1d10f15019c35b5a80ef73db95cd6
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF file contains multiple embedded links, with a critical heuristic firing indicating a malicious redirector at 'https://ttraff.com/pify?keyword=job+description+chemical+engineer'. The document body, though heavily obfuscated, contains text related to a job description, suggesting a social engineering lure. The presence of numerous external PDF links, many hosted on Shopify, further supports the link farm tactic. No scripts were extracted from this sample.

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=job+description+chemical+engineer
    • http://tizilozes.stincrowvoden.com/uploads/1/3/0/9/130969280/zagirajukas.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/26450106566.pdf
    • https://cdn.shopify.com/s/files/1/0433/0304/3230/files/kimodogewu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0777/8711/files/cadences_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0434/4119/3110/files/bojemofojowa.pdf
    • https://cdn.shopify.com/s/files/1/0436/4802/4741/files/bhagavad_gita_in_gujarati_file.pdf
    • https://cdn.shopify.com/s/files/1/0431/6554/8705/files/93508253945.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gobobuxewinunegurugita.pdf
    • https://cdn.shopify.com/s/files/1/0430/6065/8333/files/sybex_cysa.pdf
    • https://cdn.shopify.com/s/files/1/0430/6380/4058/files/6087102611.pdf
    • https://cdn.shopify.com/s/files/1/0466/2702/9157/files/rafibazomewadepexazazun.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/suramagufumaxuragozud.pdf
    • https://cdn.shopify.com/s/files/1/0431/1826/4469/files/46593434284.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_off000063ec.bin
49b96629f422915efe1980f91004b19c04bf9b04083879db7a1e39ebe6ea4bfc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63EC 5616 bytes
font_01_sfnt_off000076c4.bin
7bb246fcdae7c0abae0d481e52d9f5c10975801d7992d6e0b65345847bd33c65		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76C4 10060 bytes

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