Malicious PDF — malware analysis report

Static analysis result for SHA-256 12e30e02a4275dad…

MALICIOUS

PDF

52.7 KB Created: 2020-11-03 18:40:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: c7e32876056246fbf2ccf283269a6557 SHA-1: 7703bda588e19a82933e711ad11c3e6b75916f6d SHA-256: 12e30e02a4275dadd6d4fcb6a0f8098f38d1dc3eb118043281753bca6b7afb73
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains embedded links that point to known malicious redirector infrastructure, specifically 'ttraff.com'. The document body, though heavily obfuscated, contains a URL that matches the one identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. This suggests the document is designed to lure users to a malicious site, likely for further exploitation or phishing. No scripts were extracted from this sample.

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 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.com/123?keyword=eicosapentaenoic+acid+double+bonds In PDF document text
    • https://bilewazivabo.weebly.com/uploads/1/3/2/8/132816117/e4521751.pdfIn PDF document text
    • https://vozunutav.weebly.com/uploads/1/3/0/9/130969695/2138756.pdfIn PDF document text
    • https://suzoniku.weebly.com/uploads/1/3/4/4/134456843/2778e.pdfIn PDF document text
    • https://nifufoji.weebly.com/uploads/1/3/4/4/134458522/d4c1e0620fc0a5.pdfIn PDF document text
    • https://luwibizikowar.weebly.com/uploads/1/3/4/4/134483868/gagugusiwitelelewis.pdfIn PDF document text
    • https://nuvisinuxaxo.weebly.com/uploads/1/3/1/3/131383681/8406064.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/fb2e4f39-0615-495d-8a53-a3f7666f8b7e/13579331275.pdfIn PDF document text
    • https://s3.amazonaws.com/gitipelut/kate_chopin_the_story_of_an_hour_download.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/indian_food_calorie_chart_for_weight_loss.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8f6d9ac-229d-48fa-b072-0fbb1d1e1573/26345015054.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/015236f2-cf5e-4c26-8521-d18cfdeb8f5c/garcia_effect_experiment.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96e2d276-bfc1-40de-8e0c-5f1f365c915b/35946482926.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007e17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E17 4952 bytes
SHA-256: ac092f94855285dd49e9bd73b03a45112c8485c3b0529dc0c059006535802148
font_01_sfnt_off00008eea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EEA 12540 bytes
SHA-256: 3309cfb0627e0b146a9119d47860f17465061b04a292daaa4a3fac0b0986ac8a
font_02_sfnt_off0000b7be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB7BE 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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