Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5f896d48647c289…

MALICIOUS

PDF

40.6 KB Created: 2020-08-19 06:45:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 79abdc88a3bea5b245228997ca913b31 SHA-1: c1c6308edbf48ed112d155394f3feceb508726e6 SHA-256: c5f896d48647c28900419f66e8d9038a9527090b0f9121a808f1d68e9e93c607
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which points to a URL designed to look like a template for Staples address labels. This URL is the primary indicator of malicious intent, likely serving as a lure for phishing or scam operations. The document also contains a link farm heuristic, suggesting an attempt to manipulate search engine results or distribute malicious content through multiple links. No scripts were extracted, but the presence of a malicious redirector URL is sufficient to classify this as a malicious document.

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.ru/pify?keyword=staples+white+address+labels+template+5160
    • http://jenoz.kaleskorner.com/uploads/1/3/1/3/131380344/nimevatoxem.pdf
    • http://zulemegi.chiaramingarelli.com/uploads/1/3/1/3/131380500/25b8e8f7e52a.pdf
    • https://cdn.shopify.com/s/files/1/0440/2439/7989/files/36422215159.pdf
    • https://cdn.shopify.com/s/files/1/0433/3728/5797/files/canon_eos_rebel_xt_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/0118/4417/files/application_format_for_getting_permission.pdf
    • https://cdn.shopify.com/s/files/1/0427/9789/1751/files/telugu_audio_songs_mp4_free.pdf
    • https://cdn.shopify.com/s/files/1/0437/6444/9437/files/64383463744.pdf
    • https://cdn.shopify.com/s/files/1/0430/4899/2930/files/rasewizogumu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1931/3053/files/nunupa.pdf
    • https://cdn.shopify.com/s/files/1/0434/8585/5897/files/xolowopidizekiwatizojafo.pdf
    • https://cdn.shopify.com/s/files/1/0431/3631/9639/files/xegonuwovenubidikazuji.pdf
    • https://cdn.shopify.com/s/files/1/0450/8542/5829/files/rokomari_niramish_ranna.pdf
    • https://cdn.shopify.com/s/files/1/0429/5681/6540/files/faxad.pdf
    • https://cdn.shopify.com/s/files/1/0430/7327/4018/files/guniwun.pdf
    • https://cdn.shopify.com/s/files/1/0449/5913/7951/files/eigenvector_centrality.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_off00005cf1.bin
a5d53adc8fe96898074de2bd7914f75f74bce9574e6d4f567d345e9ef84d32e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CF1 6008 bytes
font_01_sfnt_off00007148.bin
aba72323b5045ace90904e5e2b632d77ced58cc61e45b50611c20016560c404c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7148 10596 bytes

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