Malicious PDF — malware analysis report

Static analysis result for SHA-256 562e8ef4f8db593b…

MALICIOUS

PDF

45.7 KB Created: 2020-08-09 06:44:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 132467db79de98aeb9179864acafee2a SHA-1: 007b735d4ec9b3b4cb0e4b17b230346d74d43e66 SHA-256: 562e8ef4f8db593bf7617528218b57ef491a5cf774183286d68da61cce506d4a
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a download button, intended to lure the user to a malicious site. The document body, though heavily obfuscated, contains the URL that triggered the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, likely for SEO manipulation or to host further malicious content.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=ncert+class+6+ancient+history+textbook+pdf
    • http://files.asc3.org/uploads/1/3/0/8/130874370/fewufarefinadabaf.pdf
    • http://files.saltwaterschool.com/uploads/1/3/1/4/131438098/remunitimujutok.pdf
    • http://files.dassiedahan-author.com/uploads/1/3/1/4/131436971/wixodasa.pdf
    • http://nitinu.volks-retail-llc.com/uploads/1/3/0/9/130969723/bamavu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0706/5757/files/juvutaja.pdf
    • https://cdn.shopify.com/s/files/1/0434/1478/2119/files/55392318375.pdf
    • https://cdn.shopify.com/s/files/1/0427/4146/5244/files/synthesized_and_inherited_attributes.pdf
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/newitowuvajutugusujedana.pdf
    • https://cdn.shopify.com/s/files/1/0430/0839/3369/files/turebi.pdf
    • https://cdn.shopify.com/s/files/1/0434/0980/1365/files/pdf_search_engine.pdf
    • https://cdn.shopify.com/s/files/1/0433/6749/7880/files/pink_floyd_coming_back_to_life_guitar_tab.pdf
    • https://cdn.shopify.com/s/files/1/0431/6246/8516/files/10496834917.pdf
    • https://cdn.shopify.com/s/files/1/0429/9276/3039/files/panchatantra_story_in_english_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/7606/6207/files/vikegi.pdf
    • https://cdn.shopify.com/s/files/1/0432/1381/5966/files/99575266083.pdf
    • https://cdn.shopify.com/s/files/1/0437/2309/6216/files/retesubef.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/nanemowakurubawo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065aa.bin
34de5f0c8376fcd4815414b75bb91afef2090d33b4e50db6002ef2aeac83d62b
pdf-font-stream PDF embedded font (sfnt) at offset 0x65AA 5528 bytes
font_01_sfnt_off00007869.bin
d4b751333a4555346ba1c9fc591ec3563dfb0a684c8e7249ea1960a4cb27399e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7869 10192 bytes
font_02_sfnt_off00009b48.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0x9B48 4324 bytes