Malicious PDF — malware analysis report

Static analysis result for SHA-256 b301c2ac5e2f837c…

MALICIOUS

PDF

46.0 KB Created: 2020-08-15 09:20:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9173077b5e851c2871142d53eaa21064 SHA-1: 80e1e90bbb3f5a1f59d69d9e9fc58a52492ce4eb SHA-256: b301c2ac5e2f837c4461ba92e1ca4183406d554824b4c45156f43caa6bc16914
140 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, directing users to 'https://ttraff.cc/wb?keyword=euston%20station%20map%20pdf'. Additionally, it exhibits a PDF link farm pattern, embedding numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains the malicious URL and references to other PDFs. The presence of a callback lure heuristic suggests a potential social engineering tactic to trick users into calling a fraudulent support line.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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/wb?keyword=euston%20station%20map%20pdf
    • http://vuzibi.teatimewithnaomi.org/uploads/1/3/0/7/130738720/rujijow_vepekuzawuk_sizig.pdf
    • http://wiwuvugat.lungbuster.org/uploads/1/3/2/6/132681072/6597294.pdf
    • http://files.aaronhunttheatre.com/uploads/1/3/2/6/132681880/3648315.pdf
    • http://lusif.stepintoyourjoy.com/uploads/1/3/0/8/130874001/tefakevag_punikabekidoxo.pdf
    • http://files.votelogan53.com/uploads/1/3/2/7/132741476/jedafivejalam-gasope-sexinax.pdf
    • https://cdn.shopify.com/s/files/1/0433/1618/3205/files/kisijasexazivi.pdf
    • https://cdn.shopify.com/s/files/1/0434/3791/6312/files/how_to_decalcify_pineal_gland.pdf
    • https://cdn.shopify.com/s/files/1/0433/4891/8440/files/arnold_schwarzenegger_the_new_encyclopedia_of_modern_bodybuilding.pdf
    • https://cdn.shopify.com/s/files/1/0428/7427/3948/files/quimica_descriptiva.pdf
    • https://cdn.shopify.com/s/files/1/0447/9467/5357/files/kadambari_in_kannada.pdf
    • https://cdn.shopify.com/s/files/1/0438/8818/1400/files/vipiwake.pdf
    • https://cdn.shopify.com/s/files/1/0429/2182/0319/files/3818525136.pdf
    • https://cdn.shopify.com/s/files/1/0434/5780/6486/files/22736120140.pdf
    • https://cdn.shopify.com/s/files/1/0432/6840/7464/files/program_convert_to_word_support_arabic.pdf
    • https://cdn.shopify.com/s/files/1/0428/5225/3863/files/36176062336.pdf
    • https://cdn.shopify.com/s/files/1/0433/6723/5742/files/kopafegewilos.pdf
    • https://cdn.shopify.com/s/files/1/0434/2674/2421/files/the_wish_list_barbara_ann_kipfer.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_off00007652.bin
1db6ff920157be728955c9a27ec7f65c9cff6a11ea2662229654e5fc56e58db6
pdf-font-stream PDF embedded font (sfnt) at offset 0x7652 5016 bytes
font_01_sfnt_off00008758.bin
6230295f06cf03f455bf6d008d496cd2e9bb46675bf08f125c0cf59edd4a0385
pdf-font-stream PDF embedded font (sfnt) at offset 0x8758 10584 bytes