Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e4af59e9a6e6676…

MALICIOUS

PDF

43.9 KB Created: 2020-08-14 14:10:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d7ee87f379e336dd159d4c13ac6443af SHA-1: 694e2ea61553508f66deaab7ce10d8cb7364ec3b SHA-256: 2e4af59e9a6e6676ba549e8c3c99e473325c6de314fb0d16ca2e4874cf1f696c
152 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with the primary heuristic identifying a link to a known malicious redirector service. The document body, though partially corrupted, contains the same URL, suggesting a lure to a malicious site. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm designed to obscure the ultimate destination.

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.com/pify?keyword=aakasam+loni+chandamama+song
    • http://tamip.friendshiptoday.org/uploads/1/3/1/8/131855981/9142267.pdf
    • http://files.ashleyerina.com/uploads/1/3/0/7/130775144/4470a7338ae8dd.pdf
    • http://garigofun.ecclestoncthinktank.com/uploads/1/3/2/8/132815028/toxukelufo.pdf
    • http://files.teamthanksai.com/uploads/1/3/0/9/130968962/jorimakel_vodasemepezevu_vifezej.pdf
    • https://cdn.shopify.com/s/files/1/0433/4295/4661/files/zakarofelijixafigapewosoz.pdf
    • https://cdn.shopify.com/s/files/1/0427/8022/9791/files/88306492116.pdf
    • https://cdn.shopify.com/s/files/1/0430/7160/2855/files/novasefenelimevogifijitu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0565/6736/files/vapuwugugiweran.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pexigubozorabavajodumixi.pdf
    • https://cdn.shopify.com/s/files/1/0432/5310/4790/files/75536735437.pdf
    • https://cdn.shopify.com/s/files/1/0433/6785/8334/files/ag_economics.pdf
    • https://cdn.shopify.com/s/files/1/0429/1641/3607/files/56305881426.pdf
    • https://cdn.shopify.com/s/files/1/0437/6798/8376/files/jejuzedumoxiwude.pdf
    • https://cdn.shopify.com/s/files/1/0431/4464/2715/files/selifobitetezajevezelikur.pdf
    • https://cdn.shopify.com/s/files/1/0429/5753/7439/files/beneficios_de_una_alimentacion_saludable_en_nios.pdf
    • https://cdn.shopify.com/s/files/1/0432/3858/8584/files/54328803777.pdf
    • https://cdn.shopify.com/s/files/1/0431/8229/3141/files/46726018544.pdf
    • https://cdn.shopify.com/s/files/1/0437/2827/3569/files/wakizekuw.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e68.bin
e0f5f5d8d18b6b803b013ff4535fe1344416704da2eda5d748f06fdce4345fb8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E68 5308 bytes
font_01_sfnt_off00007045.bin
bd275acb252503e01aae1aad1ebd81c49a3d4438cef8723100c50f705ddcc772		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7045 3240 bytes
font_02_sfnt_off00007d71.bin
b41805a77a82b7dba25b8467b0805f342fdbf072faa61fe0e48d273296b2d1b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D71 10984 bytes

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