Malicious PDF — malware analysis report

Static analysis result for SHA-256 b14e05b34fa635fd…

MALICIOUS

PDF

43.4 KB Created: 2020-08-26 18:25:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ac5bd5afe89ec1aa0db9766b9ad10e2c SHA-1: 445dfdf6f458c1f04e92090e20811257c5cd3387 SHA-256: b14e05b34fa635fdbc6648d9315192366ec3f05319efaa3a400c0dbb316c5f2b
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link and a large number of external links, suggesting an attempt to drive traffic to malicious infrastructure. The presence of a download button lure further supports a phishing or scam attempt. The document body contains the malicious URL, indicating it's part of the lure.

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.me/pify?keyword=www+nyc+gov+schools+kindergarten
    • http://files.fyiexpress.com/uploads/1/3/1/3/131383619/3833906.pdf
    • http://serifa.gncwomen.org/uploads/1/3/1/4/131453541/fabop.pdf
    • http://files.amiejacobsen.com/uploads/1/3/2/6/132682124/3581689.pdf
    • https://cdn.shopify.com/s/files/1/0430/6275/5490/files/42279836266.pdf
    • https://cdn.shopify.com/s/files/1/0434/6232/8472/files/92842436089.pdf
    • https://cdn.shopify.com/s/files/1/0429/0261/8278/files/11844514269.pdf
    • https://cdn.shopify.com/s/files/1/0433/3237/0590/files/27312285745.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/31315839495.pdf
    • https://cdn.shopify.com/s/files/1/0461/8584/0803/files/gta_vice_city_stories_cso_ppsspp_and.pdf
    • https://cdn.shopify.com/s/files/1/0438/2287/4781/files/ravenous_2017_movie_free.pdf
    • https://cdn.shopify.com/s/files/1/0435/5335/7985/files/word_search_games_free_windows_10.pdf
    • https://cdn.shopify.com/s/files/1/0448/0555/4337/files/free_whatsapp_messenger_uptodown.pdf
    • https://cdn.shopify.com/s/files/1/0432/3203/4980/files/gabubulomofera.pdf
    • https://cdn.shopify.com/s/files/1/0451/7930/6135/files/89556802988.pdf
    • https://cdn.shopify.com/s/files/1/0436/2856/0547/files/pelunatejosotu.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/1/0435/5335/7985/files/word_search_games_free_windows_1

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069fc.bin
e68d5f6adbff4570b19d355909886eb0c243fca35e64b01de5f983aa91ca4034		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69FC 5532 bytes
font_01_sfnt_off00007cd5.bin
d24ec8ba1e7a2b271660a9e8d3a5cfa9039d6ef4e7972b40d53d2d29a96b2eb5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CD5 10360 bytes

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