Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d0ccd127e6aeccd…

MALICIOUS

PDF

56.8 KB Created: 2020-08-23 20:47:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ee563426b2249f480d19950aa3a4b12c SHA-1: c7d07ab58ede60b2ea08e0a331da1af8670634a8 SHA-256: 6d0ccd127e6aeccd6efe4a27de5ef9f65f982d831f27884dffd49ce16d9ee90e
154 Risk Score

Malware Insights

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

The PDF contains embedded links, with one prominently pointing to a known malicious redirector infrastructure at 'ttraff.com'. The document body, though obfuscated, contains text suggesting it is a guide, which is likely a lure. The presence of numerous external PDF links, many hosted on Shopify, further indicates a link farm or SEO manipulation tactic to distribute malicious content. No scripts were extracted, but the malicious links are sufficient evidence of malicious intent.

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=ecuador+climbing+and+hiking+guide+pdf
    • http://files.thecollegescout.com/uploads/1/3/1/3/131398573/21a51bb5c8.pdf
    • http://files.cactusblueboutique.com/uploads/1/3/2/8/132816096/zerajerumususis_jopazudit_rodixujatebu_nawamorefumuju.pdf
    • http://xasevam.shedofbooks.com/uploads/1/3/2/7/132740478/4180012.pdf
    • http://files.mmzurita.com/uploads/1/3/0/8/130874518/jibafiwe_gowepiwape_fasukomovu_toxitogulugizuw.pdf
    • http://pebine.tpched.org/uploads/1/3/1/4/131453870/jaxidute.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/6844/8151/files/14502064441.pdf
    • https://cdn.shopify.com/s/files/1/0437/0730/2037/files/medical_certificate_format_for_maternity_leave_extension.pdf
    • https://cdn.shopify.com/s/files/1/0430/8389/0850/files/zeroforovoluxigejofusu.pdf
    • https://cdn.shopify.com/s/files/1/0431/7272/4892/files/badminton_information_in_marathi_language.pdf
    • https://cdn.shopify.com/s/files/1/0429/9387/7145/files/zulejozopupateginivekofur.pdf
    • https://cdn.shopify.com/s/files/1/0431/5519/4011/files/spongebob_3_hours_later.pdf
    • https://cdn.shopify.com/s/files/1/0459/2923/4599/files/application_software_information_in_marathi.pdf
    • https://cdn.shopify.com/s/files/1/0432/8649/5397/files/24448278826.pdf
    • https://cdn.shopify.com/s/files/1/0429/2745/6419/files/icecream_split_and_merge.pdf
    • https://cdn.shopify.com/s/files/1/0431/0515/7282/files/wogeputupatiwigaza.pdf
    • https://cdn.shopify.com/s/files/1/0437/5176/8225/files/luvenak.pdf
    • https://cdn.shopify.com/s/files/1/0437/3767/7989/files/70759652194.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_off00009f58.bin
cbe691db924531b3d3dd03371b23cb6e97751fbcb21c8df20d9c21dc60ebdc16		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F58 5552 bytes
font_01_sfnt_off0000b206.bin
b9d5b3e884478d9693837b4310b5b6e85451ad655f738c00c98663cd164254bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB206 10616 bytes

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