Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e58ce473eecc816…

MALICIOUS

PDF

64.2 KB Created: 2020-08-19 23:03:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fccddbccf365bef2c864f2e214563226 SHA-1: 46ef3c6ff9c8ff6a040653114c1a635b98700e7c SHA-256: 1e58ce473eecc816ace8ec13507e91b13dd30f7032451d6ceba810f388a59b71
128 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body and embedded URLs suggest a lure for downloading an academic resource, which is a common social engineering tactic. The PDF_SEO_LINK_FARM heuristic further indicates a large number of links, likely for SEO poisoning or to obscure the malicious redirector.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=abnormal+psychology+17th+edition+free
    • http://files.bookhivebeerclub.com/uploads/1/3/0/9/130969910/f65beae6b726.pdf
    • http://xaxamog.lifeandentertainment.com/uploads/1/3/0/8/130814717/9804276.pdf
    • https://cdn.shopify.com/s/files/1/0429/8165/4691/files/79497774469.pdf
    • https://cdn.shopify.com/s/files/1/0443/6181/0076/files/libro_aura_para_descargar.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/japoxotoruzub.pdf
    • https://cdn.shopify.com/s/files/1/0432/7679/6057/files/7936267367.pdf
    • https://cdn.shopify.com/s/files/1/0433/4295/4661/files/lasetimuxur.pdf
    • https://cdn.shopify.com/s/files/1/0431/3926/8769/files/sezuxoge.pdf
    • https://cdn.shopify.com/s/files/1/0428/1755/2543/files/insurance_broker_definition.pdf
    • https://cdn.shopify.com/s/files/1/0432/2128/7067/files/the_adventures_of_sherlock_holmes_book_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/9643/2021/files/24507240230.pdf
    • https://cdn.shopify.com/s/files/1/0429/2280/3363/files/48861550882.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/apparatus_used_in_chemistry_lab.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009a6e.bin
d3c72726bf8ca49c3affe92afe9d4595a6dc3f6919c6bc94f703bfcce851c8f7
pdf-font-stream PDF embedded font (sfnt) at offset 0x9A6E 5932 bytes
font_01_sfnt_off0000ae73.bin
692afa27a58ff01b1f661f0d2224666725e43edf9b62fe1e7d180a4410bb6a66
pdf-font-stream PDF embedded font (sfnt) at offset 0xAE73 15440 bytes
font_02_sfnt_off0000de8e.bin
f12bcc42cb143e9cc41a08ef9f9c81c8a36c017982c073a20263204097028d61
pdf-font-stream PDF embedded font (sfnt) at offset 0xDE8E 16100 bytes