Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b995d19d1a2e012…

MALICIOUS

PDF

42.2 KB Created: 2020-08-22 02:41:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 906645a9579c4d8434c503b6fe3c0cb1 SHA-1: 8055808d8c7d6edf12599af4bb248263eb9d14bc SHA-256: 4b995d19d1a2e012b050a5ade56a4163da6cc3f7691518b3c0f49ad210acfa26
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to benign Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains text referencing an "iphone 4s icloud activation bypass tool" and the malicious URL, indicating a phishing lure. The presence of a malicious redirector suggests the intent is to lead the user to a site that will likely host further malicious content or phishing forms.

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=iphone+4s+icloud+activation+bypass+tool
    • http://kubov.cowgirlcoutureny.com/uploads/1/3/2/6/132696030/nisakukula_nasudatixi_xedudodit_loxuzigegelakub.pdf
    • http://files.prairieartscenter.org/uploads/1/3/0/7/130739831/f6df14.pdf
    • http://files.newhavenalphas.com/uploads/1/3/1/3/131379553/2904691.pdf
    • http://fobum.rushchapel.com/uploads/1/3/0/7/130738568/80815ef0048db.pdf
    • https://cdn.shopify.com/s/files/1/0436/5336/5910/files/theater_character_development_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0437/8460/1752/files/39200220596.pdf
    • https://cdn.shopify.com/s/files/1/0434/3798/1852/files/39223073690.pdf
    • https://cdn.shopify.com/s/files/1/0432/0228/1633/files/98186464009.pdf
    • https://cdn.shopify.com/s/files/1/0437/1978/6645/files/3d_cad_files_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/1329/9620/files/desuxisuloja.pdf
    • https://cdn.shopify.com/s/files/1/0434/6550/6966/files/empire_warriors_td_lvl_20_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/paxotubawatukegi.pdf
    • https://cdn.shopify.com/s/files/1/0435/0499/2421/files/4401157624.pdf
    • https://cdn.shopify.com/s/files/1/0438/3640/7973/files/lujamepewupulenixud.pdf
    • https://cdn.shopify.com/s/files/1/0431/7629/6614/files/25444146192.pdf
    • https://cdn.shopify.com/s/files/1/0433/8545/4757/files/sutepiwokarufitevapa.pdf
    • https://cdn.shopify.com/s/files/1/0436/1669/8526/files/xesufonajofututefoga.pdf
    • https://cdn.shopify.com/s/files/1/0429/6769/5511/files/jegamugafesaguxumikev.pdf
    • https://cdn.shopify.com/s/files/1/0434/6114/8836/files/academia_4xx_af_fragments.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_off000066f4.bin
e0f33ac0e6c51afeb001eed5999086573cee4bd9e6d68943e66a2b86e56c9c72
pdf-font-stream PDF embedded font (sfnt) at offset 0x66F4 5392 bytes
font_01_sfnt_off00007948.bin
6ffe8ed051cc2d2dc36c8c2d3dc995eb52684aa7e344ad4c7564d7cdae43ab24
pdf-font-stream PDF embedded font (sfnt) at offset 0x7948 10120 bytes