Malicious PDF — malware analysis report

Static analysis result for SHA-256 266b8ea54c446d17…

MALICIOUS

PDF

39.3 KB Created: 2020-08-15 05:57:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 09689f3ae4c4eb479c45f95c81e2ff37 SHA-1: c0adfb784f3dd8ce308486d6fc8347e827833fbd SHA-256: 266b8ea54c446d17d1b6b09b2310061456f037860b70a550fbb4474413ed1f45
152 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO manipulation tactic. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is likely the primary malicious intent. The ML classifier also strongly indicated maliciousness. No scripts were extracted, limiting the ability to determine further payload delivery or execution methods.

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.com/wb?keyword=ramazan%20yetgin%20sen%20bilirsin%20pdf%20indir
    • http://files.rileystevens.org/uploads/1/3/0/7/130738850/025ce1.pdf
    • http://warasavud.saltedsanctuarysoap.com/uploads/1/3/0/8/130813325/wikunumaputu.pdf
    • http://files.kidkatranch.com/uploads/1/3/1/4/131453048/zajexim-topapu-zuladuvoro-bojuragarugu.pdf
    • http://files.dakotacollins.com/uploads/1/3/1/3/131379361/eff34013.pdf
    • https://cdn.shopify.com/s/files/1/0430/9195/1769/files/musicmatch_jukebox_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/9656/4131/files/mepotaxupofaragefekakewiw.pdf
    • https://cdn.shopify.com/s/files/1/0435/1331/5480/files/luwedaba.pdf
    • https://cdn.shopify.com/s/files/1/0431/4795/2292/files/depeleranejazaruvan.pdf
    • https://cdn.shopify.com/s/files/1/0437/6880/7578/files/cold_rolled_sheet_metal_properties.pdf
    • https://cdn.shopify.com/s/files/1/0432/0981/8272/files/mawaf.pdf
    • https://cdn.shopify.com/s/files/1/0433/2670/1726/files/lurakavejagij.pdf
    • https://cdn.shopify.com/s/files/1/0436/7712/2713/files/43051185465.pdf
    • https://cdn.shopify.com/s/files/1/0450/8083/8309/files/the_catechism_of_the_catholic_church.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zosakasebiribo.pdf
    • https://cdn.shopify.com/s/files/1/0429/0006/2367/files/detroit_become_human_android_name_generator.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_off00005897.bin
fb08283194cffc6e9aa5008eedee73d367683db45d88144d5078fbb253806e8c
pdf-font-stream PDF embedded font (sfnt) at offset 0x5897 5660 bytes
font_01_sfnt_off00006bcf.bin
4f46108a471e8b289c02e13c4884b0f37dacc619ed6b1d19ebc6f3fcec2bd5dc
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BCF 10868 bytes