Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1280c07e0692e30…

MALICIOUS

PDF

38.5 KB Created: 2020-08-23 17:16:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d111e30cff5d38f063d131f5dc4755f5 SHA-1: 20c52c57c94cedbf9d003aebaa882b6045cc85ae SHA-256: e1280c07e0692e3016594a02f6aa6e59a4428db06a4fb84f8fed3a2b3bad9de9
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with a critical heuristic firing for a malicious redirector link. The document body, though heavily obfuscated, contains text fragments suggesting a lure related to a 'movie guide'. The presence of a link farm and a high ML classifier score further indicate malicious intent, likely for phishing or malware delivery.

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.cc/pify?keyword=batemans+bay+cinema+movie+guide
    • http://xiwojaxe.truetvmovies.net/uploads/1/3/0/9/130969723/f080449a2.pdf
    • http://nuvufege.yawenyang.com/uploads/1/3/2/6/132683289/xilelovuferu.pdf
    • http://files.ledgewoodhills.net/uploads/1/3/2/6/132695361/nekonaruwiwoxisib.pdf
    • https://cdn.shopify.com/s/files/1/0436/2089/2834/files/66113287115.pdf
    • https://cdn.shopify.com/s/files/1/0430/4669/9165/files/adhyatma_ramayanam_tamil_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/4851/7275/files/fewajoxogepadozejevenaneg.pdf
    • https://cdn.shopify.com/s/files/1/0429/2496/6044/files/63126991280.pdf
    • https://cdn.shopify.com/s/files/1/0432/3144/5149/files/family_feud_game_template_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/7373/1741/files/letter_from_birmingham_jail_with_paragraph_numbers.pdf
    • https://cdn.shopify.com/s/files/1/0439/4024/9755/files/18390148293.pdf
    • https://cdn.shopify.com/s/files/1/0433/7133/1742/files/30974410239.pdf
    • https://cdn.shopify.com/s/files/1/0437/0785/9096/files/libby_financial_accounting_8th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0430/2965/9797/files/45210038968.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005849.bin
8e91f0b53c3543859fc202f609991ff1526d7f9effb5cee5b1abb5823f435e32
pdf-font-stream PDF embedded font (sfnt) at offset 0x5849 5480 bytes
font_01_sfnt_off00006ae3.bin
c6ed4a9fc6e0f6783b6727f77887c158ca63f75dad48b818e21ec62e86bdeb2d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6AE3 10128 bytes