Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb7426442d714453…

MALICIOUS

PDF

55.9 KB Created: 2020-08-04 06:24:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a488f27d00d196755bdb73ccda2daec9 SHA-1: 97a63ce43added5556b09891eeb52551a188bedb SHA-256: eb7426442d714453d4b9b132613b8d18a75a15d99c7f7f21bddf2e6bad3a9c97
150 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical link to a known malicious redirector at https://ttraff.cc/pify?keyword=analytic+number+theory+pdf. This indicates a phishing or scam attempt designed to lure users to malicious infrastructure. The document body, though heavily obfuscated, contains references to the redirector URL and other Shopify-hosted PDF files, suggesting a link farm or SEO poisoning tactic to distribute malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.cc/pify?keyword=analytic+number+theory+pdf
    • http://files.pirihirajames.com/uploads/1/3/1/4/131437873/lawixevu-deberekugugi.pdf
    • http://files.harrisendofthetrailranch.com/uploads/1/3/0/7/130776126/rigitifo.pdf
    • http://files.konseptiplus.net/uploads/1/3/0/8/130874489/4834351.pdf
    • http://files.americanlegionpost555.com/uploads/1/3/1/3/131380337/5461744.pdf
    • http://puzom.thebridesshoppe.com/uploads/1/3/1/8/131857419/6a7fa6fd78e112.pdf
    • https://cdn.shopify.com/s/files/1/0428/1594/6911/files/37949270495.pdf
    • https://cdn.shopify.com/s/files/1/0431/2429/3796/files/jezujumovetulapid.pdf
    • https://cdn.shopify.com/s/files/1/0433/8096/5534/files/business_model_canvas_analysis.pdf
    • https://cdn.shopify.com/s/files/1/0435/3087/9125/files/connect_ps3_controller_to_pc.pdf
    • https://cdn.shopify.com/s/files/1/0429/6019/1641/files/jijuj.pdf
    • https://cdn.shopify.com/s/files/1/0438/2051/5488/files/fijevegezikiwoniwoxe.pdf
    • https://cdn.shopify.com/s/files/1/0437/1437/9930/files/2009_vw_passat_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/0791/7729/files/45933831047.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sozolomunegodufedawugiwe.pdf
    • https://cdn.shopify.com/s/files/1/0438/4686/0960/files/john_deere_js40.pdf
    • https://cdn.shopify.com/s/files/1/0433/6808/7717/files/japuwosunitise.pdf
    • https://cdn.shopify.com/s/files/1/0428/5179/5107/files/nivelebonexem.pdf
    • https://cdn.shopify.com/s/files/1/0429/1064/6435/files/64706812895.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_off00009c3c.bin
11b90038d657ac21acb97d8d1356a925f06849d03957d9a7cf72fba40e878b28
pdf-font-stream PDF embedded font (sfnt) at offset 0x9C3C 5448 bytes
font_01_sfnt_off0000ae9c.bin
2457eabf776ad88ccad9b00b6f7014f4102b5f16191e4c64f5e158b38204faca
pdf-font-stream PDF embedded font (sfnt) at offset 0xAE9C 10584 bytes