Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd297016ce5a8210…

MALICIOUS

PDF

53.1 KB Created: 2020-08-27 18:01:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1b4ec9bd30906f662c1c65838cdac3b9 SHA-1: fb7af74551cb37eeffc7a39e1eb5c0924a8b620e SHA-256: dd297016ce5a82108c1e5b561a2393b7def09cf575e61cd7a2006918bcfde7bf
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, also contains the same malicious URL, suggesting an attempt to lure users into clicking it. The presence of a link farm further indicates a malicious intent to distribute harmful content or redirect traffic.

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.club/pify?keyword=la+sombra+del+viento+pdf+completo
    • http://files.gettingnailed.co.uk/uploads/1/3/2/3/132302718/a469ee021b.pdf
    • http://files.sabatropicscafe.com/uploads/1/3/0/7/130775232/7704096.pdf
    • http://files.shiftcowork.com/uploads/1/3/1/3/131398159/panirulamoru-muruxake.pdf
    • http://files.merrimackreview.com/uploads/1/3/1/8/131856815/vewosi-pidapipikisez-tumawixa.pdf
    • http://zivosan.rteamcaninecoaching.com/uploads/1/3/0/7/130776113/35e2ae800.pdf
    • https://cdn.shopify.com/s/files/1/0433/9472/8103/files/game_blur_mod_apk.pdf
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/5740563367.pdf
    • https://cdn.shopify.com/s/files/1/0440/0254/1726/files/tipos_de_blastula.pdf
    • https://cdn.shopify.com/s/files/1/0433/9276/2006/files/kazaruriliraxoke.pdf
    • https://cdn.shopify.com/s/files/1/0427/6181/4172/files/pekotumigisopokopufered.pdf
    • https://cdn.shopify.com/s/files/1/0431/9451/5614/files/mimesefuxumolenubesonu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0630/4166/files/39446532064.pdf
    • https://cdn.shopify.com/s/files/1/0435/7832/7203/files/elementary_stability_and_bifurcation_theory.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/44411244229.pdf
    • https://cdn.shopify.com/s/files/1/0430/0531/3177/files/boogeyman_game_apk.pdf
    • https://cdn.shopify.com/s/files/1/0435/2930/6263/files/9642019047.pdf
    • https://cdn.shopify.com/s/files/1/0431/9812/0094/files/34769504860.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007618.bin
5bd84b371c9e8f43fb97c4f7b2a7a5a57d93638cb623fed9a1a6a8bf943ff3b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7618 5228 bytes
font_01_sfnt_off000087be.bin
39745b1d8ac8d38e38743842a131f7fe1b8e885c483a9573d79598abd37f941d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87BE 1676 bytes
font_02_sfnt_off0000900c.bin
43a1157639829694afc874fc257a64d830c3623f38bcf71916543f3a361cf745		 pdf-font-stream PDF embedded font (sfnt) at offset 0x900C 11976 bytes
font_03_sfnt_off0000b715.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB715 4324 bytes

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