Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c04828d0ece3d40…

MALICIOUS

PDF

173.6 KB Created: 2020-11-02 17:43:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: bdff1459f1b5c7c8eff1b47e384ca8ab SHA-1: 28182a3798eebc61e7b7d1a247a8abfaeeea4b82 SHA-256: 7c04828d0ece3d401386d32b66e528a3c48b5b1ec02f7a118defad8709c7ae72
102 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/123?keyword=roblox+id+songs+remix'. The document body also contains this URL, suggesting it is the primary lure. The presence of urgency language further supports a phishing or scam attempt. While no scripts were explicitly extracted, the ML classifier and redirector link strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9803

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=roblox+id+songs+remix In PDF document text
    • https://cdn-cms.f-static.net/uploads/4370263/normal_5f8d5fc2ba401.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380086/normal_5f8b3eaa7ed30.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421966/normal_5f9b3a37cfbf9.pdfIn PDF document text
    • https://nulomofog.weebly.com/uploads/1/3/4/3/134331556/vedugiwafufevekem.pdfIn PDF document text
    • https://tijabitosivu.weebly.com/uploads/1/3/4/3/134396728/9310787.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375528/normal_5f980edc7ebf9.pdfIn PDF document text
    • https://wekubuzebebam.weebly.com/uploads/1/3/0/7/130739705/8209e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365598/normal_5f87043215cdd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403805/normal_5f91fae4a1d25.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402501/normal_5f953d52da476.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/4dd08c8b-1ef9-4b58-9a74-6e90a1dd31f7/57323471780.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82546604-6ef6-43b2-8210-f57083d688fd/sokituvenukilezubipobemi.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001e9cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E9CB 6676 bytes
SHA-256: eb818d908f85100d3a99250672f03864bcbe34b2514f2b59354f321a79477503
font_01_sfnt_off0001fa6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FA6D 7272 bytes
SHA-256: fd0df22d54d57861d6c299d022643d2f1dde73ede1e4f311051ac3702a59e967
font_02_sfnt_off0002135a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2135A 5152 bytes
SHA-256: f6943c68064550169571787daa65d48bc37db94feedd767667787a83c0efb276
font_03_sfnt_off000224ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x224CA 9808 bytes
SHA-256: 0402bac742ad5b79acbbb1c76dd59bf169c3feb9aebdd1a01c31a2df11d66bcf
font_04_sfnt_off0002458d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2458D 16212 bytes
SHA-256: 456436f32d5572cf9805dc7079a8848ee53317f3dba0c1887429ee80793d3697
font_05_sfnt_off0002791c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2791C 18820 bytes
SHA-256: 0c5e43288abd06fe620fab4c3d86a5af5a79661d1238d81665880e92197755d9
font_06_sfnt_off0002962d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2962D 6092 bytes
SHA-256: ad74cc7364ebf866ca48cff8d00dc7655c358880c2b44803d0120f127bcbb363

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