Malicious PDF — malware analysis report

Static analysis result for SHA-256 40c9a383999f605f…

MALICIOUS

PDF

63.9 KB Created: 2020-08-07 20:05:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 546c16b1f70715b269982a1b996fdaf3 SHA-1: e1ab364211c7da3bdd750a8c38da79aa86b83120 SHA-256: 40c9a383999f605ffe3b21f7a30bfc2376c671b02c61fee3a1a1ecda90aa0bf1
120 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious domain, disguised as a Bible quiz. This is further supported by the PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM heuristics, indicating a tactic to lure users to malicious infrastructure. The document body, though heavily obfuscated, contains the target URL and references to PDF files, reinforcing the lure.

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=bible+quiz+questions+and+answers+from+matthew+pdf+in+telugu
    • http://files.trainingaid.co.uk/uploads/1/3/1/3/131379939/favotaziroso.pdf
    • http://files.bocahearts.com/uploads/1/3/0/8/130814594/6104853.pdf
    • http://files.harvestbaptistchurchmd.com/uploads/1/3/0/7/130739525/zedazinudikog-kujabavorimajo.pdf
    • http://files.limadrivesdachurch.org/uploads/1/3/1/0/131070501/1610080.pdf
    • https://cdn.shopify.com/s/files/1/0438/0629/4176/files/eenadu_pratibha_current_affairs_in_english_2020.pdf
    • https://cdn.shopify.com/s/files/1/0429/0278/2111/files/27622712430.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/nasusuwupe.pdf
    • https://cdn.shopify.com/s/files/1/0431/9110/7742/files/corpus_juris_civilis_justinian.pdf
    • https://cdn.shopify.com/s/files/1/0429/1058/0899/files/wufujutizufujipuwoj.pdf
    • https://cdn.shopify.com/s/files/1/0433/9400/7201/files/xanibuvivu.pdf
    • https://cdn.shopify.com/s/files/1/0436/6503/1321/files/php_extract_number_from_end_of_string.pdf
    • https://cdn.shopify.com/s/files/1/0430/7176/6690/files/toxosofiguzodo.pdf
    • https://cdn.shopify.com/s/files/1/0438/7936/6811/files/99168332170.pdf
    • https://cdn.shopify.com/s/files/1/0430/1655/2605/files/8822536037.pdf
    • https://cdn.shopify.com/s/files/1/0433/8260/3934/files/tinkle_double_digest_download_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/8180/1629/files/8172011999.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_off000079d8.bin
ab7c38877fa89f7c36ff1c22b0aff86bfe4d5632c1835b8744645a31c15beaa0
pdf-font-stream PDF embedded font (sfnt) at offset 0x79D8 5912 bytes
font_01_sfnt_off00008de0.bin
574ab42dfa4065ee48c280f67d1a9e3de3a4ac7016dd79164debbca183d1d581
pdf-font-stream PDF embedded font (sfnt) at offset 0x8DE0 26212 bytes
font_02_sfnt_off0000c63f.bin
8f0e4a9b4b06572e3f584b2903a9f5358a2c3a961e6b89adad26fd3114d01555
pdf-font-stream PDF embedded font (sfnt) at offset 0xC63F 13712 bytes