Malicious PDF — malware analysis report

Static analysis result for SHA-256 7eaff8c947feb467…

MALICIOUS

PDF

37.2 KB Created: 2020-08-10 01:53:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02eb6de8e835fcad8a81c85f21cdefd7 SHA-1: 51b9b1eea1580fc164f53f8f63aeddf57cfcccb8 SHA-256: 7eaff8c947feb4671312eb5b04fb31af34854e2981654ea3c464784c0efe8963
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous embedded links, with a critical heuristic identifying one as a malicious redirector. The document body, though partially obfuscated, also contains the URL 'https://ttraff.com/pify?keyword=loi+sur+l+am%25C3%25A9nagement+durable+du+territoire+forestier+pdf', suggesting a phishing or scam attempt. The presence of many external links, including those to Shopify, indicates a potential link farm designed to distribute malicious content or traffic.

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=loi+sur+l+am%25C3%25A9nagement+durable+du+territoire+forestier+pdf
    • http://files.davispharmacyclub.org/uploads/1/3/1/3/131381288/0e45fd7724f.pdf
    • http://files.remember-to-smile.com/uploads/1/3/1/3/131384589/e27fcc6381018.pdf
    • http://files.eyespeak.org/uploads/1/3/0/8/130813866/pugewafa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/9427/0371/files/anthem_bcbs_prior_authorization_form.pdf
    • https://cdn.shopify.com/s/files/1/0449/2728/7451/files/botany_for_degree_students_by_ac_dutta.pdf
    • https://cdn.shopify.com/s/files/1/0431/6482/7805/files/pejukamubapid.pdf
    • https://cdn.shopify.com/s/files/1/0446/9863/2346/files/siselirigiketajela.pdf
    • https://cdn.shopify.com/s/files/1/0430/1045/7753/files/78343209807.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/redukenedobitaguwowok.pdf
    • https://cdn.shopify.com/s/files/1/0436/3704/7449/files/fedosinutibefobena.pdf
    • https://cdn.shopify.com/s/files/1/0429/7529/7689/files/56131314231.pdf
    • https://cdn.shopify.com/s/files/1/0431/5460/4198/files/nixut.pdf
    • https://cdn.shopify.com/s/files/1/0431/1888/7068/files/15803345827.pdf
    • https://cdn.shopify.com/s/files/1/0430/9562/1796/files/tevipaf.pdf
    • https://cdn.shopify.com/s/files/1/0430/8336/6551/files/85960754457.pdf
    • https://cdn.shopify.com/s/files/1/0434/1871/4264/files/13195834618.pdf
    • https://cdn.shopify.com/s/files/1/0430/9408/1687/files/zuvubitinamog.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_off000050d8.bin
0836cf722e0963550137fa746d4216c0550c4b59a0a18dcfa62d9e0162b117e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x50D8 5584 bytes
font_01_sfnt_off00006376.bin
3cfc6e3e8e8ca887a3d05a18b1d45ae3dbb4eba44f992b4f1c06e95761e6096f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6376 10464 bytes

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