Malicious PDF — malware analysis report

Static analysis result for SHA-256 32fe2f6277012ebe…

MALICIOUS

PDF

36.9 KB Created: 2020-08-14 10:51:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ec0f82d3cd7b07ccedcdf995d613ac61 SHA-1: 75a540e4d55872fe169ec0fdb274c76ffcd1e8cb SHA-256: 32fe2f6277012ebee550a8484d783946acb1ec2995be8141242feff20c23e9a6
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the same malicious URL. This suggests the PDF is designed to act as a lure, redirecting users to malicious infrastructure, likely for phishing or malware delivery.

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/pify?keyword=boss+me+25+owner%2527+s+manual+pdf
    • http://files.drclaudetteking.com/uploads/1/3/1/0/131070718/5071579.pdf
    • http://files.dabbleabout.com/uploads/1/3/1/6/131606431/soropisesajo.pdf
    • http://files.swatarachurchofgod.org/uploads/1/3/1/3/131379397/ninanijapaz-gunenigavivezo-posakuzowo-pexam.pdf
    • https://cdn.shopify.com/s/files/1/0434/2287/5813/files/8425917201.pdf
    • https://cdn.shopify.com/s/files/1/0437/1188/9573/files/revolution_in_guinea_amilcar_cabral.pdf
    • https://cdn.shopify.com/s/files/1/0438/2821/5968/files/atharva_veda_complete.pdf
    • https://cdn.shopify.com/s/files/1/0433/3463/1579/files/81110207733.pdf
    • https://cdn.shopify.com/s/files/1/0433/4754/2165/files/instrumen_penilaian_akreditasi_puskesmas.pdf
    • https://cdn.shopify.com/s/files/1/0434/0056/0803/files/67236559158.pdf
    • https://cdn.shopify.com/s/files/1/0434/6016/5797/files/89429955124.pdf
    • https://cdn.shopify.com/s/files/1/0428/5631/7091/files/jspdf_auto_table_html.pdf
    • https://cdn.shopify.com/s/files/1/0431/3966/1981/files/gudejemomujafovavemiwexi.pdf
    • https://cdn.shopify.com/s/files/1/0433/7513/2821/files/gujapidisiliziwefogarezo.pdf
    • https://cdn.shopify.com/s/files/1/0437/2067/1384/files/prizerebel_point_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_off000051ed.bin
e47db377d79223a5cd47f4e9d46bed0920d83285c35702c03f528e51e41f1b20
pdf-font-stream PDF embedded font (sfnt) at offset 0x51ED 5620 bytes
font_01_sfnt_off00006509.bin
0a25678b222aab95d2ccaab389b131e2a47a110060b0a71349ea8acdb35e5215
pdf-font-stream PDF embedded font (sfnt) at offset 0x6509 10000 bytes