Malicious PDF — malware analysis report

Static analysis result for SHA-256 7af633008cb78ce0…

MALICIOUS

PDF

45.5 KB Created: 2020-08-19 22:44:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4302ebece35b3d52a3908dd4c83622d2 SHA-1: 5f5630b759f298c0a5195d559337d24b9ca07be8 SHA-256: 7af633008cb78ce07d81cf2d1e82a9bdc342056a1a68366b9407439025073d4e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document is designed as a lure, masquerading as a 'sample funeral program template free'. It contains a significant number of embedded links, many pointing to a redirector service and a link farm of other PDFs. This indicates an attempt to drive traffic to malicious or potentially malicious sites, likely for further exploitation or phishing.

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=sample+funeral+program+template+free
    • http://files.cascadiancouriers.com/uploads/1/3/0/7/130775320/vubomexabadume_bezexinosod.pdf
    • http://babew.fullertonindiansfootball.com/uploads/1/3/2/6/132695550/d50891f747e263c.pdf
    • http://files.armandwright.com/uploads/1/3/1/4/131437601/f6e9372eb.pdf
    • http://pinip.masterautolift.com/uploads/1/3/0/8/130814328/begalipoper-solobisugata.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0433/9462/9786/files/harley_davidson_service_manual_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/1603/6257/files/85158073887.pdf
    • https://cdn.shopify.com/s/files/1/0432/5585/7315/files/nuwonadon.pdf
    • https://cdn.shopify.com/s/files/1/0436/6853/7509/files/73570339551.pdf
    • https://cdn.shopify.com/s/files/1/0434/6426/1797/files/61145732164.pdf
    • https://cdn.shopify.com/s/files/1/0435/9628/4062/files/computer_full_form_download_free.pdf
    • https://cdn.shopify.com/s/files/1/0447/9238/1589/files/arapca_turkce_kelimeler.pdf
    • https://cdn.shopify.com/s/files/1/0430/9693/2501/files/nimikefaxixikisipepof.pdf
    • https://cdn.shopify.com/s/files/1/0433/4305/2953/files/pujodule.pdf
    • https://cdn.shopify.com/s/files/1/0429/2729/2582/files/bin_dokuz_yz_seksen_drt_george_orwell.pdf
    • https://cdn.shopify.com/s/files/1/0431/9733/3668/files/31142558974.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000689f.bin
d5ad1d378d2123eccbd9f5ddfb06d10e94364695ce61dd2019dc3744c6926076		 pdf-font-stream PDF embedded font (sfnt) at offset 0x689F 4980 bytes
font_01_sfnt_off00007972.bin
fb95381a886dd586d2e24ec025939604e79ac55e6f1779737416151d9f915db4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7972 9888 bytes
font_02_sfnt_off00009b2f.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B2F 4324 bytes

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