Malicious PDF — malware analysis report

Static analysis result for SHA-256 02e0e835f9708755…

MALICIOUS

PDF

73.3 KB Created: 2020-09-02 03:10:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02fc790005c62769f4ed474cbd2bb95b SHA-1: 128b9de8f2324b1993629add9ab3ea95e02c15ac SHA-256: 02e0e835f9708755b16e868f0becbf58c8ea30eea1b27f82ed61c0549b35e7de
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains heuristics indicating it's a malicious redirector and an advance-fee scam lure. The document body, though heavily obfuscated, contains a URL that appears to be part of the lure. The presence of numerous external PDF links, many pointing to benign content, suggests a link farm used to obscure the malicious redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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=businessman+3+movie++300mb
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0430/7877/9029/files/forufefo.pdf
    • https://cdn.shopify.com/s/files/1/0432/2253/2251/files/don_t_laugh_at_me_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0431/6702/3253/files/intermediate_algebra_michael_sullivan_3rd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0430/9185/3479/files/ropivar.pdf
    • https://cdn.shopify.com/s/files/1/0443/0387/6252/files/fiwemapaxuvuxozona.pdf
    • https://static.usrfiles.com/ugd/ffe0d3_5af537ce7b6d41ed8e783b8f7e12d561.pdf
    • https://static.usrfiles.com/ugd/145364_159f4d96aa2549d4aed0b85f9e468baf.pdf
    • https://static.usrfiles.com/ugd/b8c837_2e736227da9c45b5bb0b3c9fcb3d05c2.pdf
    • https://static.usrfiles.com/ugd/1c8c1e_af5c45882fa946ef982b300a10c7eabc.pdf
    • https://static.usrfiles.com/ugd/76de1a_7ce2b4e6966d47f0b3d434463e423784.pdf
    • https://cdn.shopify.com/s/files/1/0433/2145/8853/files/mepusenipute.pdf
    • https://cdn.shopify.com/s/files/1/0427/8570/2054/files/segasetasukeza.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/20116177671.pdf
    • https://cdn.shopify.com/s/files/1/0462/7949/1733/files/dusedubixixozoxafugazuwi.pdf
    • https://cdn.shopify.com/s/files/1/0435/6079/6318/files/addressing_modes_in_computer_organization_and_architecture.pdf
    • https://static.usrfiles.com/ugd/4b7290_686a48eed17d4757b65af86909788916.pdf
    • https://static.usrfiles.com/ugd/8bc2a6_cdadb5ca0ca84ba085e42d33d97c65d3.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bf7f.bin
95da31f7008bba01b0e3c0cdd2486c9b5ce79fdf2889a3ba3c208a657ea14da9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBF7F 5060 bytes
font_01_sfnt_off0000d091.bin
66bef200cc52e7194207a6db4f4d589e3f1a730597e2e61e7621b523aac82693		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD091 10420 bytes
font_02_sfnt_off0000f469.bin
6e3fbd491d8b71441998836ddca0d0c102716a221ea14f8143929167ad9a79b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF469 16164 bytes
font_03_sfnt_off0001097e.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1097E 4324 bytes

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