Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0f271f28abe2002…

MALICIOUS

PDF

40.8 KB Created: 2020-08-19 03:01:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c91155b714b5f9611b05145c0b1c685d SHA-1: d3a5a086a13703e2e991fbac693adfcf9d984a17 SHA-256: b0f271f28abe2002ff81685e781b4def4463f5f2ba17d3575ed3e920d2f905f9
152 Risk Score

Malware Insights

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

The PDF contains embedded links that lead to a redirector service, which in turn points to potentially malicious content. The document body, though partially garbled, includes text related to a 'Fortinet fortigate 100d datasheet' and the malicious URL, suggesting a lure to trick users into clicking the link. The presence of numerous external PDF links also indicates a link farm strategy, likely for SEO poisoning or distributing further malicious content.

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=fortinet+fortigate+100d+datasheet
    • http://fuwevibog.jenibe.com/uploads/1/3/0/7/130738730/zijolinezesan-rimizob-wisigexepetepi-pafeposorez.pdf
    • http://lepeto.studentvoicesnyc.org/uploads/1/3/1/4/131406361/cf7ae9f5b176.pdf
    • https://cdn.shopify.com/s/files/1/0433/7070/9150/files/zikiveluwowixalaf.pdf
    • https://cdn.shopify.com/s/files/1/0438/3748/9309/files/difumozoxalijigiwuzoze.pdf
    • https://cdn.shopify.com/s/files/1/0429/2801/3475/files/81423236982.pdf
    • https://cdn.shopify.com/s/files/1/0433/4790/2629/files/agendas_personalizadas_para_imprimir.pdf
    • https://cdn.shopify.com/s/files/1/0440/8547/7541/files/pigakuwatika.pdf
    • https://cdn.shopify.com/s/files/1/0437/0202/6393/files/99486514230.pdf
    • https://cdn.shopify.com/s/files/1/0431/5299/8556/files/wagixebo.pdf
    • https://cdn.shopify.com/s/files/1/0437/7369/0017/files/drm_media_converter.pdf
    • https://cdn.shopify.com/s/files/1/0431/1767/4656/files/asa_flight_planner.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_off0000574e.bin
b60f168338eebd08b7fe1a9cbb2de595b7d5003f0f78be843b5e5da04b7a2ac6
pdf-font-stream PDF embedded font (sfnt) at offset 0x574E 5284 bytes
font_01_sfnt_off00006946.bin
0b9dc8dd49b0ef1f1de83f44fbe43a7bac54ae0af37eb2db25a1162da41f8b8e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6946 14672 bytes