Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7a80565bd36fab1…

MALICIOUS

PDF

45.0 KB Created: 2020-07-18 16:44:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-04
MD5: 6ebd552197d7a7df559a453941b063ef SHA-1: 74f5bed2b45130a9046a5945c9c4a15be3ffb392 SHA-256: c7a80565bd36fab17b6422396638e64706757e467bb118eb49cd8096fff7c33b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to a link farm hosted on 'tapsongz.com' and similar domains. The primary redirector URL 'https://ttraff.cc/' is also present, indicating a campaign to drive traffic to malicious sites. The document body, though heavily obfuscated, contains keywords related to the 2018 World Cup, suggesting a lure to entice users to click the malicious links.

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/wb?keyword=jadwal%20piala%20dunia%202018%20waktu%20indonesia%20pdf In PDF document text
    • http://files.tapsongz.com/uploads/1/3/1/4/131483153/dipazovijojivi-mutupegiragoz-zalezojetibuk.pdfIn PDF document text
    • http://files.busyboldlife.com/uploads/1/3/0/8/130814984/gazesaviwavera.pdfIn PDF document text
    • http://files.expandedhealing.com/uploads/1/3/0/8/130874400/jogopijufajanum_gatabo_vovat_xakinajudoti.pdfIn PDF document text
    • http://files.soapfactory.tv/uploads/1/3/0/7/130740521/rajax_getunefojef_nuxobukomuj.pdfIn PDF document text
    • http://files.thewoolproject.com/uploads/1/3/2/7/132740756/8065460.pdfIn PDF document text
    • http://files.avianatechnologies.com/uploads/1/3/1/8/131872105/3237335.pdfIn PDF document text
    • http://files.tunajenga.com/uploads/1/3/1/3/131379398/dipodanizudigimitoxe.pdfIn PDF document text
    • http://files.maiaseats.com/uploads/1/3/2/8/132814286/wafoxoxag_xanawakuwuz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://kukemiti.files.wordpress.com/2020/06/zavojulu.pdfIn PDF document text
    • https://muvufarovuka.files.wordpress.com/2020/07/wivuluzafosa.pdfIn PDF document text
    • https://jesedusur.files.wordpress.com/2020/07/65662743755.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8702/8641/files/sevapezozogifonifuxidezo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0586/9217/files/34951417080.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7754/2823/files/81665081605.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/41448402009.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8180/1629/files/89171883170.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6645/8265/files/71528047878.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007195.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7195 5484 bytes
SHA-256: d7ae97965942298776a7361beff6b4153cb29c1053d8588d6a560bde493c6fb6
font_01_sfnt_off00008462.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8462 10024 bytes
SHA-256: 211e64a120a8d66a2626b0842f6b319f2728ade14578ce7fe04a602a6e0990dc

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