Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bc4f0842dc891af…

MALICIOUS

PDF

76.9 KB Created: 2020-08-18 13:53:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3457e1470f9b65dfc1ae35541666b764 SHA-1: c4e179a45f2fa9480ed655c54074af5ed6939834 SHA-256: 5bc4f0842dc891af39bc0a25e4999d45f8a4a89fd5d5d1d024b49932a15c53ec
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a lure related to a 'game laptop god of war 2' and includes numerous links, with one identified as a malicious redirector. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' strongly suggests this is an advance-fee fraud document, likely aiming to trick the user into clicking the malicious link for a fake prize or offer. The ML classifier also flagged this PDF as malicious.

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=game+laptop+god+of+war+2
    • http://files.herbaceouslyurban.com/uploads/1/3/1/3/131379951/kelotaxemu_wugubefabilesuj_zuwifo_bufosusaku.pdf
    • http://vosirawo.pastaandpatchwork.com/uploads/1/3/1/4/131407406/newipowupavibaleb.pdf
    • http://files.nouveaumedic.org/uploads/1/3/2/6/132681356/b571a159b5e18.pdf
    • http://files.homewoodtrackandfield.com/uploads/1/3/0/8/130874197/2883443.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/5283/4711/files/rubikabimix.pdf
    • https://cdn.shopify.com/s/files/1/0436/2846/2233/files/fonitimuxetufewanawibizud.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gojifazuxosupimuron.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/87463685859.pdf
    • https://cdn.shopify.com/s/files/1/0429/5114/7679/files/boss_gt_10_user_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/3974/2369/files/satisfaction_benny_benassi_song.pdf
    • https://cdn.shopify.com/s/files/1/0437/0454/9531/files/literary_devices_worksheet_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0429/0763/1782/files/lafusorisejezojez.pdf
    • https://cdn.shopify.com/s/files/1/0454/6904/0790/files/wimadojawirewetov.pdf
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/blueprints_neurology_free.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_off0000ddc5.bin
3f0fc129ae47a4c50979b6f8ada723a377aed0c9177bda49fc1761701eda2068		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDDC5 5508 bytes
font_01_sfnt_off0000f09c.bin
53e3bd40a5dd51ace8e046fea1d6f9af07944fc15d70d1cc7b41e81c4d418192		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF09C 5440 bytes
font_02_sfnt_off00010327.bin
d3751062d9c076894d0e1a4c4b00f8d021bbdea99f3773879da5ef6f9f274b14		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10327 10308 bytes

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