Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea861ff000f5d5e0…

MALICIOUS

PDF

40.3 KB Created: 2020-11-04 22:23:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: a24103a2e6fc11282dac5ef5f9e0ed4a SHA-1: 30d69ad6606e9a32490e4c944777109a535a657b SHA-256: ea861ff000f5d5e0ee3e588e0a6e643c9ea21899e4443c9a9501c5df9ec764a6
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains embedded URLs, one of which is identified as a malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for a game, directing users to the malicious URL. The presence of numerous external PDF links suggests a link farm or SEO poisoning attempt to drive traffic to malicious sites.

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://gettraff.ru/123?keyword=super+stacker+1+unblocked In PDF document text
    • https://cdn-cms.f-static.net/uploads/4370542/normal_5f95fed0b0f74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369509/normal_5fa1fd07a767c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418170/normal_5f96cb068eff9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458145/normal_5fa1766f5e19c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380213/normal_5f8d90216f957.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378164/normal_5f90878b333bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381105/normal_5f8c26eb57fa4.pdfIn PDF document text
    • https://polabufasol.weebly.com/uploads/1/3/2/8/132814050/3551090.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e54102c1-91a4-43dc-8505-863215a53936/musula.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d02699e-b3b5-4604-9a7e-332ec03c1e6e/tepenufipamuvurujasesevo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f17eb04-58ce-43e0-9af5-d4b39e068730/world_english_national_geographic_free.pdfIn PDF document text
    • https://s3.amazonaws.com/dukajevo/atrocity_act_2015_in_marathi.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_off00005d6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D6E 5428 bytes
SHA-256: a1b874bb613c36e6f3f111f8185f5c19c6c230e7163d7e579527996b122a13fd
font_01_sfnt_off00006feb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FEB 10736 bytes
SHA-256: 3db85661f569220f4149b085a27b74ce568ebcc39eca2f3917d86ec3aeb1d2b5

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