Malicious PDF — malware analysis report

Static analysis result for SHA-256 448029a995513aab…

MALICIOUS

PDF

48.1 KB Created: 2020-08-09 14:13:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e2e5cafcd5c6a18a25d8edc12c9fbe94 SHA-1: e1cfdbe5c24938e9b2720af56162df1643c0255c SHA-256: 448029a995513aaba847f18eda2ea9edc38caa0cae121eba4e61d3f25beba4d1
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, forming a link farm. One of these links, 'https://ttraff.ru/pify?keyword=levels+of+affective+domain+pdf', is identified as a malicious redirector. This suggests the document's primary purpose is to direct users to malicious infrastructure, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=levels+of+affective+domain+pdf
    • http://zukofatu.enchantedcakesandtreats.com/uploads/1/3/0/8/130873851/wodor-lubaj-solusedotefoza.pdf
    • http://files.thomasradovich.com/uploads/1/3/0/9/130969986/vumevikir_nitat_degufite.pdf
    • http://files.saltwaterstivesbb.co.uk/uploads/1/3/0/7/130740011/2762373.pdf
    • http://lidulu.carnewhistoricalsociety.com/uploads/1/3/1/3/131378776/20222da16e6.pdf
    • https://cdn.shopify.com/s/files/1/0429/2889/8211/files/mibikubox.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/72438278193.pdf
    • https://cdn.shopify.com/s/files/1/0441/1038/1208/files/mercenaries_ps2_cheats.pdf
    • https://cdn.shopify.com/s/files/1/0430/1383/2857/files/belumal.pdf
    • https://cdn.shopify.com/s/files/1/0440/9776/5528/files/90665970978.pdf
    • https://cdn.shopify.com/s/files/1/0430/0718/0954/files/gmat_analytical_writing_assessment.pdf
    • https://cdn.shopify.com/s/files/1/0434/7622/2114/files/volkswagen_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/7404/4579/files/550043998.pdf
    • https://cdn.shopify.com/s/files/1/0432/8692/1382/files/canon_powershot_s2_si.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_off000071a6.bin
2bb5e894045516164e0d0dbd3c0ea04561e60f331f86b86e69aed1ddf560f3da
pdf-font-stream PDF embedded font (sfnt) at offset 0x71A6 4992 bytes
font_01_sfnt_off0000829d.bin
55ae28e570fc8a36bc41b01965aba11a725efe640d9a21d72b7494110fcad2c3
pdf-font-stream PDF embedded font (sfnt) at offset 0x829D 10428 bytes
font_02_sfnt_off0000a5d5.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0xA5D5 4324 bytes