Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7814764b38192be…

MALICIOUS

PDF

46.7 KB Created: 2020-08-12 20:42:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e928aa813670feaeb4a7a9f385b51f3 SHA-1: 0ca1b1adc9e48839f6dc5ec6023e9a6ac05d9fe9 SHA-256: f7814764b38192beaa9bd06b0efaf49942cffd843dbffef5e3a9250e4b2d9c93
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector to 'https://ttraff.com/pify?keyword=callan+method+pdf'. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting an attempt to drive traffic to various sites. The document body, though heavily obfuscated, contains references to the redirector URL, reinforcing the malicious intent. The primary attack pattern involves tricking the user into clicking these links, leading to potentially harmful destinations.

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=callan+method+pdf
    • http://files.phloxdivinity.org/uploads/1/3/0/7/130776180/mokis.pdf
    • http://files.ellenalt.com/uploads/1/3/2/3/132302924/derusexasen.pdf
    • http://surifuri.intimatelyyoursweddings.com/uploads/1/3/1/8/131856333/6413345.pdf
    • http://files.mikevincentphotography.net/uploads/1/3/1/3/131383541/baruxubu_kevogun_zujamozesaxapi_vigevoluzoju.pdf
    • https://cdn.shopify.com/s/files/1/0432/6175/5555/files/rawuxu.pdf
    • https://cdn.shopify.com/s/files/1/0432/1063/7475/files/11751620181.pdf
    • https://cdn.shopify.com/s/files/1/0428/1666/7815/files/general_ability_test_year_5.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/38746106010.pdf
    • https://cdn.shopify.com/s/files/1/0437/1021/8391/files/gelugubirudejejanesaf.pdf
    • https://cdn.shopify.com/s/files/1/0430/9280/3744/files/definition_of_leadership_by_scholars.pdf
    • https://cdn.shopify.com/s/files/1/0430/0885/2117/files/poxumitewo.pdf
    • https://cdn.shopify.com/s/files/1/0434/0069/1862/files/adobe_acrobat_dc_convert_word_to.pdf
    • https://cdn.shopify.com/s/files/1/0427/8360/4903/files/43542462300.pdf
    • https://cdn.shopify.com/s/files/1/0440/4966/2117/files/29278630164.pdf
    • https://cdn.shopify.com/s/files/1/0431/7275/7668/files/70913434194.pdf
    • https://cdn.shopify.com/s/files/1/0452/0319/4007/files/rsum_au_bonheur_des_dames.pdf
    • https://cdn.shopify.com/s/files/1/0437/5537/2695/files/vowabesotopu.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_off000078c1.bin
b7f22310accc36bbabed417ff2073a500d2776761e3f4429efd852730e4c67c2
pdf-font-stream PDF embedded font (sfnt) at offset 0x78C1 4912 bytes
font_01_sfnt_off00008956.bin
52eb2d71314e89d2d5af1abd28befd3a89ba616b7cbf26714c8817012bf1c5af
pdf-font-stream PDF embedded font (sfnt) at offset 0x8956 11460 bytes