Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ff5608302122286…

MALICIOUS

PDF

33.1 KB Created: 2020-09-06 04:25:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe1281d08ac32be31123f82f6c97e7ba SHA-1: 8df04de764471b613e3a187f013cccdb3eaeda26 SHA-256: 7ff5608302122286ab67012421c845ec285ac737c1e9ce4642fa05bdded4eaf7
128 Risk Score

Malware Insights

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

The PDF contains a prominent link that redirects to a malicious domain, disguised as an offer for free software. This is supported by the 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' heuristics, indicating a phishing or scam attempt. The document body also contains the malicious URL and a list of other URLs, likely part of a link farm to improve search engine ranking for 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.com/wix?keyword=free++office+2016+with+key
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/bijomajaboxirifolani.pdf
    • https://cdn.shopify.com/s/files/1/0464/7200/3734/files/apple_airport_base_station_utility.pdf
    • https://cdn.shopify.com/s/files/1/0437/0900/5978/files/metformin_glucophage_pregnancy.pdf
    • https://cdn.shopify.com/s/files/1/0436/0234/6148/files/4236508306.pdf
    • https://cdn.shopify.com/s/files/1/0440/1682/8581/files/kaxorenunugibizevikovuz.pdf
    • https://cdn.shopify.com/s/files/1/0429/6704/0154/files/nozufoj.pdf
    • https://cdn.shopify.com/s/files/1/0430/1396/3929/files/chair_background_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/6134/6466/files/business_plan_powerpoint.pdf
    • https://cdn.shopify.com/s/files/1/0433/4161/1159/files/7398167935.pdf
    • https://cdn.shopify.com/s/files/1/0435/1095/6196/files/barcarolle_offenbach_piano.pdf
    • https://cdn.shopify.com/s/files/1/0437/3364/7509/files/tigusufenosaz.pdf
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/zijudigifilenisodu.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_off000043b8.bin
185e4f55a4eafd5429c4b2faef33cb8c18e0cfb7386bf5c7c4c052039a85c1ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x43B8 5240 bytes
font_01_sfnt_off000055b5.bin
a4c9db071dcd411ab7a9810a524aab9221beac27a6b7a028dd7eb1bd4d1d7cbc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55B5 10044 bytes

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