Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f7d92ad17f5d249…

MALICIOUS

PDF

51.2 KB Created: 2020-08-18 19:16:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 477a8e780c6227d2cfd7a36e1580e446 SHA-1: ee3a609f0e744a7e3ef6e919c38c036f2c167bf6 SHA-256: 3f7d92ad17f5d2491e6edf7a9090be8a4a7f0fb19d50574e6606ac78dc55f525
136 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. It also contains a PDF link farm heuristic, indicating a large number of external links, many hosted on Shopify. The document body contains a lure for 'Cara video dailymotion online' and a call to action, suggesting a phishing or scam attempt. The primary malicious IOC is the redirector URL, which likely leads to further malicious content.

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.cc/pify?keyword=cara++video+dailymotion+online
    • http://vazar.akapbo.com/uploads/1/3/1/0/131070792/2107286.pdf
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/jinedilukoriwaxajawepevag.pdf
    • https://cdn.shopify.com/s/files/1/0432/5113/8715/files/tufaxepopimasigu.pdf
    • https://cdn.shopify.com/s/files/1/0427/3229/0215/files/63141638114.pdf
    • https://cdn.shopify.com/s/files/1/0430/2402/3715/files/20064402947.pdf
    • https://cdn.shopify.com/s/files/1/0443/1101/9676/files/67951707015.pdf
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/67967187889.pdf
    • https://cdn.shopify.com/s/files/1/0435/5771/6119/files/vidyasiri_scholarship_application_form_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/2956/0481/files/calculus_textbook_8th_edition.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_off0000765a.bin
bb992dc21c59a7768ee43988081c34598f88f8ff484c69e122ae4734dca2ab06		 pdf-font-stream PDF embedded font (sfnt) at offset 0x765A 4860 bytes
font_01_sfnt_off000086d5.bin
23edb14c97e5009cd149b9c3bbfbe9b5cb0d6fbc748a912eca82432c3d9b80eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86D5 10596 bytes
font_02_sfnt_off0000ab2e.bin
e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAB2E 16204 bytes

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