Malicious PDF — malware analysis report

Static analysis result for SHA-256 b670f7f22369574c…

MALICIOUS

PDF

41.0 KB Created: 2020-08-06 16:07:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c94e8da590b98f082677d74faa70b92 SHA-1: 46671df3c19cb2a842bb83915878df1c014f42c7 SHA-256: b670f7f22369574c1ea9ca3434fa8a749f5afe21de72386dba9aa6e6e0eb89fc
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a PDF download. The presence of numerous external links, many pointing to Shopify, suggests a link farm or SEO poisoning attempt to drive traffic to malicious sites.

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=handbook+of+natural+toxins+pdf
    • http://files.mbrentwilliams.com/uploads/1/3/1/0/131070161/67f699c49.pdf
    • http://files.autumntheodorephotography.com/uploads/1/3/1/6/131637385/9559928.pdf
    • http://files.oaklandfootgolfclub.com/uploads/1/3/0/8/130874025/182f6dee6c2ab8.pdf
    • http://files.rwomf.us/uploads/1/3/0/7/130775108/nidunulatuf_pofemeteramiga.pdf
    • http://files.catherineozment.com/uploads/1/3/1/3/131380870/1103114.pdf
    • https://cdn.shopify.com/s/files/1/0429/0428/9439/files/permaculture_design_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/4755/8037/files/the_thyroid_solution_diet.pdf
    • https://cdn.shopify.com/s/files/1/0433/9774/2750/files/69955375431.pdf
    • https://cdn.shopify.com/s/files/1/0432/9173/8277/files/logrolling_government_definition.pdf
    • https://cdn.shopify.com/s/files/1/0429/2309/8279/files/jujitosekulisibedope.pdf
    • https://cdn.shopify.com/s/files/1/0428/4183/3635/files/hanuman_chalisa_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0431/1587/2423/files/pamajiledapiboruborad.pdf
    • https://cdn.shopify.com/s/files/1/0430/9866/9220/files/53982121717.pdf
    • https://cdn.shopify.com/s/files/1/0438/8962/3208/files/47264371985.pdf
    • https://cdn.shopify.com/s/files/1/0437/4301/9157/files/cloud_computing_tutorialspoint.pdf
    • https://cdn.shopify.com/s/files/1/0430/6301/7629/files/zepepovanotesewuravapazaz.pdf
    • https://cdn.shopify.com/s/files/1/0433/3705/6414/files/number_scores_hackerrank.pdf
    • https://cdn.shopify.com/s/files/1/0430/6026/5117/files/13841461971.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_off000056b5.bin
73a64daae76037395625cc783a4a934adb711d8774e100148ea9b7d9e27472c6
pdf-font-stream PDF embedded font (sfnt) at offset 0x56B5 5032 bytes
font_01_sfnt_off000067ca.bin
34e3e2843894c7209a8bff5ca82bafccb3b66241d154de8fb657971329bbdba1
pdf-font-stream PDF embedded font (sfnt) at offset 0x67CA 9736 bytes
font_02_sfnt_off000088f6.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0x88F6 4324 bytes