Malicious PDF — malware analysis report

Static analysis result for SHA-256 01b003cb9c0edb00…

MALICIOUS

PDF

46.8 KB Created: 2020-07-23 03:35:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-04
MD5: 2005e766adbc02edba042d1aa583c69b SHA-1: 0c037b323f74b91dc64760997e1c1de733c0d49f SHA-256: 01b003cb9c0edb00463266236561cb8da7c169b3d870048a4bd0c4e9a56c76fd
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, suggests a lure related to 'Familia tinamidae' and mentions 'wkhtmltopdf', indicating it was likely generated by a tool. The presence of embedded URLs and the heuristic firings strongly suggest a phishing or redirection attack.

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.com/wb?keyword=familia%20tinamidae%20pdf In PDF document text
    • http://files.ishan-yu.com/uploads/1/3/1/4/131408546/3922209.pdfIn PDF document text
    • http://files.gwdayschool.com/uploads/1/3/0/7/130739616/1e234.pdfIn PDF document text
    • http://files.wilddragonflyshop.com/uploads/1/3/1/4/131437702/mowamoji.pdfIn PDF document text
    • http://files.newmoses.com/uploads/1/3/1/0/131070485/a442c9584b52.pdfIn PDF document text
    • http://files.mygreenage.com/uploads/1/3/0/8/130814355/916560e4151353.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4741/8016/files/tiferati.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5663/5805/files/tikesixaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23158701460.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5330/0377/files/kefobufenunekerativogub.pdfIn PDF document text
    • https://xafozasad.files.wordpress.com/2020/07/vomase.pdfIn PDF document text
    • https://giwegepolefo.files.wordpress.com/2020/07/14563569884.pdfIn PDF document text
    • https://gebakakokexo.files.wordpress.com/2020/07/41236659895.pdfIn PDF document text
    • https://nanesezup.files.wordpress.com/2020/06/fivodupirugeziduxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5465/1799/files/kanas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/titigabibuzumazavuxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5326/1724/files/27328152235.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/30617095305.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1087/5815/files/texojonidi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1096/5147/files/luzamoxalikiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/wunonapusele.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 7

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_off00007596.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7596 4544 bytes
SHA-256: 9b0b552e0b4632e83e2c202c2d5e118e9f8a549369ebebf4cc6635137805f0aa
font_01_sfnt_off000084e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84E5 14832 bytes
SHA-256: 2bbf03f757c3077d808c22b6db58227fc266f06c8b8b0fb49f9cf4c9a72efaf2

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