Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c9c17202cac8f57…

MALICIOUS

PDF

66.3 KB Created: 2020-10-15 00:59:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: cb1a7fa4f478c6547d56f45ee44938c2 SHA-1: 627a9ab8aad0611bcbc050753057a4d67b286695 SHA-256: 7c9c17202cac8f57ac5d023bcf88dc9416f7304e45a6086c8efcc359ee442694
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to a malicious redirector. The primary malicious URL identified is https://ttraff.me/pify?keyword=labors+of+hercules+pdf, which is flagged as a known malicious redirector. This suggests the document is designed to lure users into clicking malicious links, likely leading to malware download or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.me/pify?keyword=labors+of+hercules+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366364/normal_5f8770698a1e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365608/normal_5f87231087fe2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365649/normal_5f8774751870f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367635/normal_5f876aedc71a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366321/normal_5f870dda749dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366005/normal_5f86f955c6849.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368226/normal_5f876a304948f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366011/normal_5f87742a62044.pdfIn PDF document text
    • https://site-1037240.mozfiles.com/files/1037240/babav.pdfIn PDF document text
    • https://site-1043668.mozfiles.com/files/1043668/god_of_war_ascension_ppsspp_android.pdfIn PDF document text
    • https://site-1039545.mozfiles.com/files/1039545/niguluzuwerabesosemitep.pdfIn PDF document text
    • https://site-1038777.mozfiles.com/files/1038777/dikawikazefe.pdfIn PDF document text
    • https://jufaxexave.weebly.com/uploads/1/3/0/7/130775513/4008585.pdfIn PDF document text
    • https://gidixelasulam.weebly.com/uploads/1/3/0/7/130739099/jodajikafewaberuxa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/7934/3527/files/kilisup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/2645/9035/files/aaa_san_luis_obispo_dmv_services.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8419/5014/files/types_of_solids_pogil_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4411/8434/files/types_of_lemurs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/7645/2004/files/busidiledof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/8980/3461/files/guitar_tuna_mod_apk_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0491/8185/1814/files/22549303594.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c0e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0E2 5324 bytes
SHA-256: 7d7e9d50da2164aae870de29e4e69b72182e8da8af3302ec5220367f5b69d305
font_01_sfnt_off0000d2f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2F0 12288 bytes
SHA-256: 3dd20fbf9a8fdc141573a4141e549a3d6f891172b9f176cd208b1712d801c25a

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