Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc68ca3122ed4e49…

MALICIOUS

PDF

51.1 KB Created: 2020-08-07 14:47:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e74cc2f09e1941e5ce9f95283a428d7c SHA-1: f071ab407e154fc680a13fe0dbfc73ac4fb87169 SHA-256: cc68ca3122ed4e4931d97e81afd5047477a6b67e1133f82681b64a6226c3fb16
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=badinerie+piccolo+trumpet+pdf'. This URL is likely used to redirect the user to a malicious site. The document body, though heavily obfuscated, also contains this URL and references to 'piccolo trumpet pdf', suggesting a lure. The presence of numerous external PDF links, many hosted on Shopify, further indicates a link farm or distribution mechanism.

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.cc/pify?keyword=badinerie+piccolo+trumpet+pdf
    • http://files.guycockrum.com/uploads/1/3/0/7/130739731/59172727edf30.pdf
    • http://files.christineprietoarted.com/uploads/1/3/1/6/131636956/9d2420ea787ad73.pdf
    • http://files.bellanaturareggio.org/uploads/1/3/0/8/130814682/raguzinu.pdf
    • http://files.zip-dang.com/uploads/1/3/1/3/131383664/gadizubobowow_kufusu.pdf
    • https://cdn.shopify.c
    • https://cdn.shopify.com/s/files/1/0430/5174/5442/files/bojasurazoreridofonumuf.pdf
    • https://cdn.shopify.com/s/files/1/0436/3599/8880/files/47441191059.pdf
    • https://cdn.shopify.com/s/files/1/0429/8768/4003/files/xutedofuxisime.pdf
    • https://cdn.shopify.com/s/files/1/0436/1181/6099/files/49615593995.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/punafaga.pdf
    • https://cdn.shopify.com/s/files/1/0429/8106/4853/files/70848616727.pdf
    • https://cdn.shopify.com/s/files/1/0437/4714/7928/files/shibari_how_to.pdf
    • https://cdn.shopify.com/s/files/1/0434/7281/4245/files/galujukekujisosasa.pdf
    • https://cdn.shopify.com/s/files/1/0445/8535/3380/files/bsc_agriculture_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/7730738641.pdf
    • https://cdn.shopify.com/s/files/1/0431/5581/6599/files/88447642266.pdf
    • https://cdn.shopify.com/s/files/1/0434/0216/6428/files/63609257752.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_off00008b2f.bin
f81b523b8220d977ca137b2dfcb43c9736acaad9c1e54e12e6aa439e71dcc575
pdf-font-stream PDF embedded font (sfnt) at offset 0x8B2F 5172 bytes
font_01_sfnt_off00009cb6.bin
4f5f27cca08d2616b4eb1f5f56e11b0f709f2d78cc8a31281bd61b092426a518
pdf-font-stream PDF embedded font (sfnt) at offset 0x9CB6 10208 bytes