Malicious PDF — malware analysis report

Static analysis result for SHA-256 e83da803252da5a6…

MALICIOUS

PDF

38.4 KB Created: 2020-08-05 11:00:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8a646b75c13f78e80d89d29825f6ec4b SHA-1: c4709bdc98c66ba6d63495f0fd522ff9424d099b SHA-256: e83da803252da5a68630168bea0c1017985428233f3e877d21d9e2e6edb050a4
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=jurnal+bunga+belimbing+wuluh+pdf'. This indicates a phishing or malicious redirection attempt. No scripts were extracted, and the document body is heavily obfuscated, but the presence of the malicious redirector is the primary indicator of compromise.

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=jurnal+bunga+belimbing+wuluh+pdf
    • http://files.elementmaster.com.au/uploads/1/3/2/3/132302718/geregonubuv_kibikixasima_vosobu.pdf
    • http://files.michaelpatmon.net/uploads/1/3/1/3/131381204/81353.pdf
    • http://puboduj.churchillhouse.net/uploads/1/3/1/8/131857631/53269.pdf
    • http://files.ohmegasalvage.com/uploads/1/3/1/1/131164130/bopomo-nilat.pdf
    • http://files.richardgoldsworthy.org/uploads/1/3/0/7/130776611/fakuluzopamus.pdf
    • https://cdn.shopify.com/s/files/1/0433/2666/8952/files/saxutuludilazapapi.pdf
    • https://cdn.shopify.com/s/files/1/0431/8635/6375/files/46108556291.pdf
    • https://cdn.shopify.com/s/files/1/0427/8750/4294/files/minecraft_morphing_mod_1._8_download.pdf
    • https://cdn.shopify.com/s/files/1/0439/1151/2232/files/pegajeramuza.pdf
    • https://cdn.shopify.com/s/files/1/0435/1993/4628/files/auggie_and_me_three_wonder_stories.pdf
    • https://cdn.shopify.com/s/files/1/0427/6345/2583/files/31444127729.pdf
    • https://cdn.shopify.com/s/files/1/0432/7302/7749/files/jerurasusevudedogasadof.pdf
    • https://cdn.shopify.com/s/files/1/0428/0470/7491/files/3587808665.pdf
    • https://cdn.shopify.com/s/files/1/0429/9928/3861/files/88294328819.pdf
    • https://cdn.shopify.com/s/files/1/0437/6346/6391/files/rijinuloligagikugojofes.pdf
    • https://cdn.shopify.com/s/files/1/0434/3549/1490/files/wisomapeva.pdf
    • https://cdn.shopify.com/s/files/1/0437/1608/3877/files/64865728466.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_off00005873.bin
507a6174984a63ef30c5dfd056f6c0f4a41702c81ab54391482ee9af49688e5c
pdf-font-stream PDF embedded font (sfnt) at offset 0x5873 5496 bytes
font_01_sfnt_off00006b0a.bin
509e6d73ce8efdd22fc69c95497ca822b4d27ac008058adcb8aa7704aadb7d38
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B0A 9880 bytes