Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5e6bb513c06084b…

MALICIOUS

PDF

63.4 KB Created: 2020-10-14 23:29:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: eb5e668beeb87f95d08ffb3e342bcfd9 SHA-1: 353f22ad5563522067482e7283fdc0948dc2715e SHA-256: f5e6bb513c06084b137151e227153dac9af5de5cb1df57c26ddeaeca82241a6f
162 Risk Score

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.cc'. The document body, though heavily obfuscated, contains text related to a 'wow cataclysm leveling guide' and a URL that appears to be part of a link farm designed for SEO manipulation. The presence of these elements, combined with a high ML classifier score, indicates a malicious intent to redirect users to harmful content.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.cc/pify?keyword=wow+cataclysm+leveling+guide+1-85 In PDF document text
    • https://site-1043121.mozfiles.com/files/1043121/gulazinadoxarefezasizox.pdfIn PDF document text
    • https://site-1043215.mozfiles.com/files/1043215/14756175252.pdfIn PDF document text
    • https://site-1040282.mozfiles.com/files/1040282/31109267280.pdfIn PDF document text
    • https://site-1036828.mozfiles.com/files/1036828/34447285148.pdfIn PDF document text
    • https://kupugaxome.weebly.com/uploads/1/3/0/9/130969415/zubobaratezodojuleri.pdfIn PDF document text
    • https://mupibidegupek.weebly.com/uploads/1/3/0/8/130874042/3314248.pdfIn PDF document text
    • https://vilukenuxe.weebly.com/uploads/1/3/2/8/132814007/wopevoza.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://cdn.shopify.com/s/files/1/0432/8967/3888/files/13885219862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2632/0024/files/sizudadimigilumoxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2930/1914/files/rosary_for_the_dead.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4981ef44-f29d-4326-8898-2527d0ee4b98/dalekibagolukepomiwexew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/151c58a4-805c-4bfd-8f68-4ed5d47b9698/tinejujinizosires.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4200/4375/files/fluid_aquatics_deluxe_pool_noodle.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/7735/3639/files/zorenizokakar.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009fcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FCF 5712 bytes
SHA-256: 3f551b82e521840d1151e563de2aca11b6713cce0fd9c6bd88cd8c23bf624b53
font_01_sfnt_off0000b351.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB351 1800 bytes
SHA-256: 51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0
font_02_sfnt_off0000bbdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBDF 11056 bytes
SHA-256: 7415b2d0ce1b04fee37741ce939af3c7be6a6ae999d8c2c5e86a2729bad677da
font_03_sfnt_off0000e191.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE191 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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