Malicious PDF — malware analysis report

Static analysis result for SHA-256 f88b0641f652e4f1…

MALICIOUS

PDF

42.9 KB Created: 2020-08-07 15:19:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b48c796823cb49d9a196250712b317f SHA-1: a05ec8c3d652331ff8c000c4f476a854d6b7c4e2 SHA-256: f88b0641f652e4f1101387461e2e26d1db8d440660110aba1fff6b8bdb459c7b
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains but are likely part of a link farm to obscure the malicious intent. The primary malicious link, https://ttraff.com/pify?keyword=afrontamiento+definicion+pdf, is identified as a known malicious redirector. This suggests the document's purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing.

Heuristics 3

  • 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.
  • 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=afrontamiento+definicion+pdf
    • http://files.planninginblackandwhite.com/uploads/1/3/2/7/132710655/bobuzugipiz_renele_litazafurusagop.pdf
    • http://files.im4sound.com/uploads/1/3/0/9/130969242/gafobejat-lodupol-tiguxa.pdf
    • http://files.immersionchestermere.org/uploads/1/3/0/8/130814229/7123520.pdf
    • http://files.sunshineandseeley.com/uploads/1/3/1/3/131397927/11c39ce6aacc1.pdf
    • https://cdn.shopify.com/s/files/1/0429/7929/5385/files/medical_english_test.pdf
    • https://cdn.shopify.com/s/files/1/0432/0660/7012/files/dumidagixuvadata.pdf
    • https://cdn.shopify.com/s/files/1/0431/4805/0583/files/rizawowikive.pdf
    • https://cdn.shopify.com/s/files/1/0440/3236/0613/files/78572262856.pdf
    • https://cdn.shopify.com/s/files/1/0434/5220/3161/files/how_to_use_3d_viewer.pdf
    • https://cdn.shopify.com/s/files/1/0432/6070/6971/files/93807166168.pdf
    • https://cdn.shopify.com/s/files/1/0438/6455/5680/files/english_tutorials_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0439/9906/8310/files/anderson_bridge_experiment.pdf
    • https://cdn.shopify.com/s/files/1/0431/7655/8746/files/74027415159.pdf
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/this_bright_egg_has_a_warm_shell.pdf
    • https://cdn.shopify.com/s/files/1/0432/3803/1518/files/43963136039.pdf
    • https://cdn.shopify.com/s/files/1/0430/4034/2169/files/towut.pdf
    • https://cdn.shopify.com/s/files/1/0433/7562/4350/files/munawivukazajosigurotiro.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006867.bin
26785f27b1d8c5cd4085b5a40ee369c64ed5b262071788e96d8c27160a56928c
pdf-font-stream PDF embedded font (sfnt) at offset 0x6867 5080 bytes
font_01_sfnt_off0000799d.bin
ec6883d23b7241aa521d61b982009da0f35a2f399eaecae1cb301a0da562d116
pdf-font-stream PDF embedded font (sfnt) at offset 0x799D 10872 bytes