Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cc446d491d323bd…

MALICIOUS

PDF

43.8 KB Created: 2020-10-28 14:26:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d4844c26f7f60621a30b20f23a07a553 SHA-1: 610804e9305d60e40ac860e70a3d05c25e45e898 SHA-256: 7cc446d491d323bd6b0eaf605f54d362bf3ce9fb6d634c484c512cf8c1eb0fca
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with at least one pointing to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be part of a link farm designed to manipulate search engine results. This suggests the document is intended to lure users to malicious sites, likely as part of a phishing or scam campaign.

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://cctraff.ru/123?keyword=stein+soul+eater+voice+actor
    • https://cdn-cms.f-static.net/uploads/4370740/normal_5f8a10e6d8bc4.pdf
    • https://cdn-cms.f-static.net/uploads/4413567/normal_5f9482f761ff8.pdf
    • https://cdn-cms.f-static.net/uploads/4369504/normal_5f8d31a219dd2.pdf
    • https://cdn-cms.f-static.net/uploads/4366408/normal_5f91231af418e.pdf
    • https://cdn-cms.f-static.net/uploads/4369901/normal_5f8e256ce3b5c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/bevarolimesale/equifax_credit_report_request_form.pdf
    • https://uploads.strikinglycdn.com/files/bb4fd6c8-c940-40a2-af06-089efbe204bc/92234123800.pdf
    • https://s3.amazonaws.com/jifesu/list_of_countries_in_europe_with_capitals_and_currency.pdf
    • https://cdn.shopify.com/s/files/1/0485/8871/8240/files/are_sloths_endangered_of_becoming_extinct.pdf
    • https://cdn.shopify.com/s/files/1/0496/0573/8660/files/96382244004.pdf
    • https://cdn.shopify.com/s/files/1/0502/3557/2408/files/muramomodikes.pdf
    • https://s3.amazonaws.com/zuxadol/88374089958.pdf
    • https://s3.amazonaws.com/muxozuvalubi/97002062550.pdf
    • https://cdn.shopify.com/s/files/1/0494/7086/5575/files/bozaduditoxabolelefonope.pdf
    • https://cdn.shopify.com/s/files/1/0431/6656/4520/files/long_vowels_worksheets_free.pdf
    • https://s3.amazonaws.com/befarekogol/alimentacion_complementaria_2018.pdf
    • https://cdn.shopify.com/s/files/1/0486/0752/7077/files/ganixozilijovomupupawu.pdf
    • https://uploads.strikinglycdn.com/files/6d448640-63b2-486f-a05f-efab1191c545/nimugawudogirudifufim.pdf
    • https://s3.amazonaws.com/gezejoputiwinu/gupubam.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d50.bin
010278bfdade99ea76b91751242127e85f3eda8ff628cfff1d78b3370541e5d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D50 4956 bytes
font_01_sfnt_off00007e3d.bin
05280a4a3977989034f693058e4d547944db5b961cc31c2fe28f9bbed82a2c06		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E3D 10604 bytes

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