Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ba49c5d80409158…

MALICIOUS

PDF

66.1 KB Created: 2020-07-09 11:22:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3a9bcac69e301217b722c47be8801fd8 SHA-1: 2342c3af826808c680d18e342e7b1e728e6ce296 SHA-256: 0ba49c5d8040915822318700da81e8e92d14e8d6cf8fdaa5c33cc0abf211b4cf
154 Risk Score

Malware Insights

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

The sample is a PDF document that contains a large number of embedded links, including a redirector link to ttraff.com. This indicates a likely attempt to direct users to malicious or spam content. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of numerous external links suggests a phishing or SEO spam 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://ttraff.com/pify?keyword=schimmelreiter+zusammenfassung+pdf
    • http://files.divinesoulenergy.com/uploads/1/3/0/9/130969819/d55ccdadbe3c.pdf
    • http://files.patrickboyle29.com/uploads/1/3/2/7/132741149/3416775.pdf
    • http://files.carsontidwell.com/uploads/1/3/1/4/131438249/mumiv.pdf
    • http://files.murciashoponline.com/uploads/1/3/0/7/130740090/zawegegugiberug-kojokulugul.pdf
    • http://files.lykebeer.com/uploads/1/3/1/0/131070192/vilogesefi.pdf
    • http://files.bellaminidoodles.com/uploads/1/3/2/8/132814523/719077.pdf
    • http://files.dorabramden.com/uploads/1/3/1/3/131382141/3729828.pdf
    • http://files.constancewashburn.com/uploads/1/3/2/3/132302810/dupid.pdf
    • http://files.japan-trademark-patent.com/uploads/1/3/0/7/130739850/buvoxawi.pdf
    • http://files.willowfree.ca/uploads/1/3/0/7/130740344/xiwodufa.pdf
    • http://files.starlightdancecamps.com/uploads/1/3/0/7/130775970/1b4c393.pdf
    • http://files.snowypeaksoap.com/uploads/1/3/2/3/132302973/a7512c13cdce8e.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://zeruzotel.files.wordpress.com/2020/06/35091263292.pdf
    • https://kukuxeveni.files.wordpress.com/2020/07/12647795856.pdf
    • https://lobodesetir.files.wordpress.com/2020/06/jepevefusotujuk.pdf
    • https://fikuwivojela.files.wordpress.com/2020/07/45841502499.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/33374625424.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/giratajolexodomofavewolov.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/52325197595.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mubexuv.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_off0000c25b.bin
98684f6dd1ca9d8a1fdbefb02cd709f64927dff3ce21c796f7ddd291eaef6c19		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC25B 5496 bytes
font_01_sfnt_off0000d4db.bin
503497da5e6e65119d4ff8554b4f19a406cf83e8aedb682c4c8ea49c9d6ea572		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD4DB 11232 bytes

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