Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c27ee2cca32a66e…

MALICIOUS

PDF

44.5 KB Created: 2020-08-13 04:42:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3a0c6971e0a25fc33de06d35084a55fd SHA-1: 2b9134c73fe582bbca29ae7936a43b6f086c3745 SHA-256: 8c27ee2cca32a66eb182fc8988c28a4c7ab52cdce11e0d1fd5b3ab38c7c13544
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains multiple heuristics indicating malicious intent, including a critical finding of a malicious redirector link and a PDF SEO link farm. The document body, though heavily obfuscated, contains text that, combined with the heuristics, suggests a lure related to financial transactions or payment redirection. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to a phishing or malware distribution site.

Heuristics 5

  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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.ru/wb?keyword=form%2031%2019%2010c%20&%2010d%20pdf
    • http://files.roygrayphotography.co.uk/uploads/1/3/1/8/131871479/520768.pdf
    • http://files.baltimorekings.com/uploads/1/3/0/7/130775743/5420236.pdf
    • http://jupul.tenderyearschildcarellc.com/uploads/1/3/1/3/131383416/7867445.pdf
    • http://files.mysunnymead.com/uploads/1/3/2/6/132682820/foterowunokurepav.pdf
    • https://cdn.shopify.com/s/files/1/0431/4506/8699/files/visibexukenokutin.pdf
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/durga_kavach_in_hindi.pdf
    • https://cdn.shopify.com/s/files/1/0437/4636/1505/files/botulismo_2020.pdf
    • https://cdn.shopify.com/s/files/1/0436/9268/7513/files/bis_hunter_classic.pdf
    • https://cdn.shopify.com/s/files/1/0432/6857/1294/files/voteforirirogalawanerux.pdf
    • https://cdn.shopify.com/s/files/1/0430/7674/7413/files/absceso_en_la_cara.pdf
    • https://cdn.shopify.com/s/files/1/0432/2210/6271/files/65334546737.pdf
    • https://cdn.shopify.com/s/files/1/0435/7108/5475/files/janubelexirexejudawifaxe.pdf
    • https://cdn.shopify.com/s/files/1/0431/6259/9586/files/kotisupubizud.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/43561311815.pdf
    • https://cdn.shopify.com/s/files/1/0430/5013/9801/files/kekamawopafekelokawuvisaj.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_off0000708a.bin
1e69793b590e8febcb26cca44e960bdf29e8e80ea9616020b9511b42972a949e
pdf-font-stream PDF embedded font (sfnt) at offset 0x708A 4992 bytes
font_01_sfnt_off00008175.bin
43dc941fde003e898afba9d6d465bb9ef835e66784036cebddb9cae459e7cfb1
pdf-font-stream PDF embedded font (sfnt) at offset 0x8175 10648 bytes