Malicious PDF — malware analysis report

Static analysis result for SHA-256 546966925e194f0c…

MALICIOUS

PDF

46.6 KB Created: 2020-08-09 17:59:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7758592020c98f733dca250feb3f9b54 SHA-1: 809de3062aa120c284a19088ceeaa91727c5e4d9 SHA-256: 546966925e194f0c35e3e6673e071db0c677e890cdde8984d3c90229e3cf76de
128 Risk Score

Malware Insights

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

The PDF file contains a lure related to 'Android version names a to z pdf' and embeds multiple external links. One of these links, 'https://ttraff.cc/pify?keyword=android+version+names+a+to+z+pdf', is identified as a malicious redirector. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm designed to attract traffic, with the primary malicious link acting as the gateway to further compromise. The SE_INVOICE_LURE heuristic further supports the idea of a deceptive document.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=android+version+names+a+to+z+pdf
    • http://files.tampareflexology.com/uploads/1/3/0/7/130775245/baligojixud.pdf
    • http://sixosin.foccm.com/uploads/1/3/1/4/131410007/xerokavezibum.pdf
    • http://files.annmariesgoodies.com/uploads/1/3/1/6/131606411/beteno.pdf
    • http://files.jamiefellows.com/uploads/1/3/0/8/130814226/1616173.pdf
    • http://files.goodworksbuilding.com/uploads/1/3/1/3/131380756/4102269.pdf
    • https://cdn.shopify.com/s/files/1/0435/9602/1919/files/70309443830.pdf
    • https://cdn.shopify.com/s/files/1/0428/5179/5107/files/golanifemujim.pdf
    • https://cdn.shopify.com/s/files/1/0434/8434/8569/files/73014208788.pdf
    • https://cdn.shopify.com/s/files/1/0435/0436/9816/files/85732897242.pdf
    • https://cdn.shopify.com/s/files/1/0440/5723/1525/files/fovexil.pdf
    • https://cdn.shopify.com/s/files/1/0440/5483/9461/files/72060482843.pdf
    • https://cdn.shopify.com/s/files/1/0432/2829/9428/files/bestiary_the_witcher_3_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0434/3696/6055/files/46065424685.pdf
    • https://cdn.shopify.com/s/files/1/0433/6225/5006/files/68706428654.pdf
    • https://cdn.shopify.com/s/files/1/0433/8306/2695/files/brick_bond_patterns.pdf
    • https://cdn.shopify.com/s/files/1/0436/4677/9552/files/dibemul.pdf
    • https://cdn.shopify.com/s/files/1/0437/4292/0869/files/cancioneros_cristianos_para_guitarra_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0441/3086/1208/files/tefafosu.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_off000076db.bin
011e1a0aa5b0ff3b764d0015cb69c13009c82ee6a4d6fd05f2338c645789389c
pdf-font-stream PDF embedded font (sfnt) at offset 0x76DB 5252 bytes
font_01_sfnt_off000088b6.bin
be9fc2c93fa13800a5f78dc6366b114a2c266be62b224b462797f136fcc85a1d
pdf-font-stream PDF embedded font (sfnt) at offset 0x88B6 10816 bytes