Malicious PDF — malware analysis report

Static analysis result for SHA-256 245393cc315f70c7…

MALICIOUS

PDF

46.7 KB Created: 2020-08-04 07:48:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e9cddff6f3ba64b700848b56fc8aa932 SHA-1: 6000a786b34f70ab7f686ad902527717f085e86b SHA-256: 245393cc315f70c76608061072947864fde5a03a11c0aabd5c0231621328abac
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=pastest+mrcp+part+2+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links to external PDFs, many hosted on cdn.shopify.com. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the same redirector URL, reinforcing the malicious intent.

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=pastest+mrcp+part+2+pdf
    • http://files.tell-consulting.com/uploads/1/3/1/4/131437446/tititubew.pdf
    • http://files.bethelchristian.com/uploads/1/3/0/9/130970004/d19363d.pdf
    • http://files.frcsiouxfalls.com/uploads/1/3/1/4/131414561/119ff737.pdf
    • http://files.chicagoblazerugby.com/uploads/1/3/0/9/130969545/1580141.pdf
    • http://jirupewe.artmentorshipab.com/uploads/1/3/1/4/131437601/1089612.pdf
    • https://cdn.shopify.com/s/files/1/0431/7354/4093/files/chaos_theory_gleick.pdf
    • https://cdn.shopify.com/s/files/1/0434/2457/9736/files/express_js_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0434/4948/3426/files/37245252912.pdf
    • https://cdn.shopify.com/s/files/1/0434/6108/3301/files/72408504846.pdf
    • https://cdn.shopify.com/s/files/1/0436/1184/8861/files/traduction_photoshop_anglais_franais.pdf
    • https://cdn.shopify.com/s/files/1/0429/0894/2499/files/11032615650.pdf
    • https://cdn.shopify.com/s/files/1/0428/2158/3004/files/tinozifusul.pdf
    • https://cdn.shopify.com/s/files/1/0437/4672/1946/files/rimworld_error_log.pdf
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/ohsas_18001_manual_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/10542261424.pdf
    • https://cdn.shopify.com/s/files/1/0440/1581/2773/files/wilibuzajasixi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71340125447.pdf
    • https://cdn.shopify.com/s/files/1/0451/1947/1781/files/business_analytics_by_dinesh_kumar.pdf
    • https://cdn.shopify.com/s/files/1/0428/7922/1927/files/93226554415.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/
    • https://cdn.shopify.com/s/fil

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000775a.bin
a04bb5b8be5771027d799b844ae802178d7e23798cb922362f866847f90f6c40		 pdf-font-stream PDF embedded font (sfnt) at offset 0x775A 5400 bytes
font_01_sfnt_off000089a7.bin
dd05139a56450f51738c5d0f2e2c9fcbc955947ada509488ad7bf64d5583c555		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89A7 10588 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.