Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fd621517326edc1…

MALICIOUS

PDF

42.0 KB Created: 2020-08-29 23:07:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04fff237fd37ea35e04e10b0783ecffc SHA-1: 39df34531f334b4c0a79e5728916e240b7b0ffea SHA-256: 5fd621517326edc1f499851a2b353da145a8cb291a569791828752482757c942
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify URLs hosting other PDFs, which is indicative of a link farm or SEO manipulation tactic. One of the primary links, https://ttraff.com/wix?keyword=dragomon+hunter+private+server, is flagged as a malicious redirector. This suggests the document's purpose is to drive traffic to malicious infrastructure, potentially for further exploitation or phishing. No scripts were extracted, but the PDF structure itself is designed to host and present these links.

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/wix?keyword=dragomon+hunter+private+server
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/5340/8675/files/baby_names_meaning_god_answers_prayers.pdf
    • https://cdn.shopify.com/s/files/1/0430/8772/4704/files/axis_mutual_fund_transmission_form.pdf
    • https://cdn.shopify.com/s/files/1/0430/8307/1650/files/6360047859.pdf
    • https://cdn.shopify.com/s/files/1/0429/2925/8649/files/research_paper_on_budget_and_budgetary_control.pdf
    • https://cdn.shopify.com/s/files/1/0431/3664/7317/files/50889024799.pdf
    • https://cdn.shopify.com/s/files/1/0435/9385/9231/files/vasover.pdf
    • https://cdn.shopify.com/s/files/1/0432/6440/9755/files/82143397103.pdf
    • https://cdn.shopify.com/s/files/1/0460/9032/2084/files/cutting_shapes_don_diablo.pdf
    • https://cdn.shopify.com/s/files/1/0433/8502/8775/files/dubumepenaderuwogenuk.pdf
    • https://cdn.shopify.com/s/files/1/0437/4344/5141/files/simultaneous_equations_worksheet_ks3.pdf
    • https://cdn.shopify.com/s/files/1/0428/6365/7119/files/kagaduluva.pdf
    • https://cdn.shopify.com/s/files/1/0431/6885/8280/files/vevifirejegap.pdf
    • https://cdn.shopify.com/s/files/1/0444/1836/7654/files/causes_of_thrombocytosis.pdf
    • https://cdn.shopify.com/s/files/1/0434/7900/7398/files/brushless_dc_motor_construction.pdf
    • https://static.usrfiles.com/ugd/b8c837_9e1e337cd6fd4260911a757f1980cbd0.pdf
    • https://static.usrfiles.com/ugd/b8c837_cc3593a299b44a2798f240f0b686a572.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_off000064c4.bin
feaf6fde19f3353202a722a84e587af97bb7daef7b46ed856ec46a6e713266bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64C4 5260 bytes
font_01_sfnt_off00007682.bin
a5898f5b62ef420ef9e42ad8ba57808c8552825fac99643890151f29941a18ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7682 10752 bytes

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